diff --git a/packages/plugin-legacy/src/index.ts b/packages/plugin-legacy/src/index.ts
index 3555d6448cf888..76fc25ac78cbd4 100644
--- a/packages/plugin-legacy/src/index.ts
+++ b/packages/plugin-legacy/src/index.ts
@@ -234,8 +234,9 @@ function viteLegacyPlugin(options: Options = {}): Plugin[] {
 
         if (options.modernTargets) {
           // Package is ESM only
-          const { default: browserslistToEsbuild } =
-            await import('browserslist-to-esbuild')
+          const { default: browserslistToEsbuild } = await import(
+            'browserslist-to-esbuild'
+          )
           config.build.target = browserslistToEsbuild(options.modernTargets)
         } else {
           config.build.target = modernTargetsEsbuild
@@ -453,15 +454,15 @@ function viteLegacyPlugin(options: Options = {}): Plugin[] {
         }
       }
 
-      const { rollupOptions } = config.build
-      const { output } = rollupOptions
+      const { rolldownOptions } = config.build
+      const { output } = rolldownOptions
       if (Array.isArray(output)) {
-        rollupOptions.output = [
+        rolldownOptions.output = [
           ...output.map(createLegacyOutput),
           ...(genModern ? output : []),
         ]
       } else {
-        rollupOptions.output = [
+        rolldownOptions.output = [
           createLegacyOutput(output),
           ...(genModern ? [output || {}] : []),
         ]
@@ -858,7 +859,7 @@ async function buildPolyfillChunk(
       minify,
       assetsDir,
       sourcemap,
-      rollupOptions: {
+      rolldownOptions: {
         input: {
           polyfills: polyfillId,
         },
diff --git a/packages/vite/src/node/__tests__/build.spec.ts b/packages/vite/src/node/__tests__/build.spec.ts
index c45d14ae6a50c1..268424a281860f 100644
--- a/packages/vite/src/node/__tests__/build.spec.ts
+++ b/packages/vite/src/node/__tests__/build.spec.ts
@@ -216,7 +216,7 @@ describe('build', () => {
           entry: ['foo.js', 'bar.js'],
           formats: ['es'],
         },
-        rollupOptions: {
+        rolldownOptions: {
           external: 'external',
         },
         write: false,
@@ -338,7 +338,7 @@ describe('resolveBuildOutputs', () => {
     const resolveBuild = () => resolveBuildOutputs(outputs, libOptions, logger)
 
     expect(resolveBuild).toThrowError(
-      /Entries in "build\.rollupOptions\.output" must specify "name"/,
+      /Entries in "build\.rolldownOptions\.output" must specify "name"/,
     )
   })
 
@@ -349,7 +349,7 @@ describe('resolveBuildOutputs', () => {
     const resolveBuild = () => resolveBuildOutputs(outputs, libOptions, logger)
 
     expect(resolveBuild).toThrowError(
-      /Entries in "build\.rollupOptions\.output" must specify "name"/,
+      /Entries in "build\.rolldownOptions\.output" must specify "name"/,
     )
   })
 })
@@ -676,7 +676,7 @@ describe('resolveBuildOutputs', () => {
     ).toEqual([{ name: 'A' }])
     expect(log.warn).toHaveBeenLastCalledWith(
       colors.yellow(
-        `"build.lib.formats" will be ignored because "build.rollupOptions.output" is already an array format.`,
+        `"build.lib.formats" will be ignored because "build.rolldownOptions.output" is already an array format.`,
       ),
     )
   })
@@ -688,7 +688,7 @@ describe('resolveBuildOutputs', () => {
       build: {
         ssr: true,
         ssrEmitAssets: true,
-        rollupOptions: {
+        rolldownOptions: {
           input: {
             index: '/entry',
           },
@@ -716,7 +716,7 @@ describe('resolveBuildOutputs', () => {
           build: {
             ssr: true,
             emitAssets: true,
-            rollupOptions: {
+            rolldownOptions: {
               input: {
                 index: '/entry',
               },
@@ -746,7 +746,7 @@ describe('resolveBuildOutputs', () => {
         ssr: {
           build: {
             ssr: true,
-            rollupOptions: {
+            rolldownOptions: {
               input: {
                 index: '/entry',
               },
@@ -767,7 +767,7 @@ describe('resolveBuildOutputs', () => {
         custom: {
           build: {
             ssr: true,
-            rollupOptions: {
+            rolldownOptions: {
               input: {
                 index: '/entry',
               },
@@ -788,7 +788,7 @@ test('default sharedConfigBuild true on build api', async () => {
     logLevel: 'warn',
     build: {
       ssr: true,
-      rollupOptions: {
+      rolldownOptions: {
         input: {
           index: '/entry',
         },
@@ -817,7 +817,7 @@ test.for([true, false])(
         client: {
           build: {
             outDir: './dist/client',
-            rollupOptions: {
+            rolldownOptions: {
               input: '/entry.js',
             },
           },
@@ -825,7 +825,7 @@ test.for([true, false])(
         ssr: {
           build: {
             outDir: './dist/server',
-            rollupOptions: {
+            rolldownOptions: {
               input: '/entry.js',
             },
           },
@@ -834,7 +834,7 @@ test.for([true, false])(
           build: {
             minify: true,
             outDir: './dist/custom1',
-            rollupOptions: {
+            rolldownOptions: {
               input: '/entry.js',
             },
           },
@@ -843,7 +843,7 @@ test.for([true, false])(
           build: {
             minify: false,
             outDir: './dist/custom2',
-            rollupOptions: {
+            rolldownOptions: {
               input: '/entry.js',
             },
           },
@@ -876,7 +876,7 @@ test('sharedConfigBuild and emitAssets', async () => {
         build: {
           outDir: './dist/client',
           emitAssets: true,
-          rollupOptions: {
+          rolldownOptions: {
             input: '/entry.js',
           },
         },
@@ -885,7 +885,7 @@ test('sharedConfigBuild and emitAssets', async () => {
         build: {
           outDir: './dist/ssr',
           emitAssets: true,
-          rollupOptions: {
+          rolldownOptions: {
             input: '/entry.js',
           },
         },
@@ -894,7 +894,7 @@ test('sharedConfigBuild and emitAssets', async () => {
         build: {
           outDir: './dist/custom',
           emitAssets: true,
-          rollupOptions: {
+          rolldownOptions: {
             input: '/entry.js',
           },
         },
@@ -937,7 +937,7 @@ test.skip('adjust worker build error for worker.format', async () => {
     await build({
       root: resolve(__dirname, 'fixtures/worker-dynamic'),
       build: {
-        rollupOptions: {
+        rolldownOptions: {
           input: {
             index: '/main.js',
           },
@@ -968,7 +968,7 @@ describe('onRollupLog', () => {
       logLevel: 'info',
       build: {
         write: false,
-        rollupOptions: {
+        rolldownOptions: {
           ...options,
           logLevel: 'debug',
         },
@@ -1115,7 +1115,7 @@ test('watch rebuild manifest', async (ctx) => {
     environments: {
       client: {
         build: {
-          rollupOptions: {
+          rolldownOptions: {
             input: '/entry.js',
           },
         },
diff --git a/packages/vite/src/node/__tests__/config.spec.ts b/packages/vite/src/node/__tests__/config.spec.ts
index d886a35053ff33..7d643d37076f28 100644
--- a/packages/vite/src/node/__tests__/config.spec.ts
+++ b/packages/vite/src/node/__tests__/config.spec.ts
@@ -313,26 +313,26 @@ describe('mergeConfig', () => {
     ).toThrowError('Cannot merge config in form of callback')
   })
 
-  test('handles `rollupOptions`', () => {
+  test('handles `rolldownOptions`', () => {
     const baseConfig = defineConfig({
       build: {
-        rollupOptions: {
+        rolldownOptions: {
           treeshake: false,
         },
       },
       worker: {
-        rollupOptions: {
+        rolldownOptions: {
           treeshake: false,
         },
       },
       optimizeDeps: {
-        rollupOptions: {
+        rolldownOptions: {
           treeshake: false,
         },
       },
       ssr: {
         optimizeDeps: {
-          rollupOptions: {
+          rolldownOptions: {
             treeshake: false,
           },
         },
@@ -341,21 +341,21 @@ describe('mergeConfig', () => {
 
     const newConfig = defineConfig({
       build: {
-        rollupOptions: {
+        rolldownOptions: {
           output: {
             minifyInternalExports: true,
           },
         },
       },
       worker: {
-        rollupOptions: {
+        rolldownOptions: {
           output: {
             minifyInternalExports: true,
           },
         },
       },
       optimizeDeps: {
-        rollupOptions: {
+        rolldownOptions: {
           output: {
             minifyInternalExports: true,
           },
@@ -363,7 +363,7 @@ describe('mergeConfig', () => {
       },
       ssr: {
         optimizeDeps: {
-          rollupOptions: {
+          rolldownOptions: {
             output: {
               minifyInternalExports: true,
             },
diff --git a/packages/vite/src/node/__tests__/dev.spec.ts b/packages/vite/src/node/__tests__/dev.spec.ts
index 8cc6f16b304bb1..9b633100d923a0 100644
--- a/packages/vite/src/node/__tests__/dev.spec.ts
+++ b/packages/vite/src/node/__tests__/dev.spec.ts
@@ -5,7 +5,7 @@ import type { ViteDevServer } from '..'
 import { promiseWithResolvers } from '../../shared/utils'
 
 describe('resolveBuildEnvironmentOptions in dev', () => {
-  test('build.rollupOptions should not have input in lib', async () => {
+  test('build.rolldownOptions should not have input in lib', async () => {
     const config = await resolveConfig(
       {
         build: {
@@ -17,7 +17,7 @@ describe('resolveBuildEnvironmentOptions in dev', () => {
       'serve',
     )
 
-    expect(config.build.rollupOptions).not.toHaveProperty('input')
+    expect(config.build.rolldownOptions).not.toHaveProperty('input')
   })
 })
 
diff --git a/packages/vite/src/node/__tests__/environment.spec.ts b/packages/vite/src/node/__tests__/environment.spec.ts
index 0d0bc70d8d6c69..9e0aa485b5cc6c 100644
--- a/packages/vite/src/node/__tests__/environment.spec.ts
+++ b/packages/vite/src/node/__tests__/environment.spec.ts
@@ -33,7 +33,7 @@ describe('custom environment conditions', () => {
               import.meta.dirname,
               'fixtures/test-dep-conditions/dist/ssr',
             ),
-            rollupOptions: {
+            rolldownOptions: {
               input: { index: '@vitejs/test-dep-conditions' },
             },
           },
@@ -50,7 +50,7 @@ describe('custom environment conditions', () => {
               import.meta.dirname,
               'fixtures/test-dep-conditions/dist/worker',
             ),
-            rollupOptions: {
+            rolldownOptions: {
               input: { index: '@vitejs/test-dep-conditions' },
             },
           },
@@ -67,7 +67,7 @@ describe('custom environment conditions', () => {
               import.meta.dirname,
               'fixtures/test-dep-conditions/dist/custom1',
             ),
-            rollupOptions: {
+            rolldownOptions: {
               input: { index: '@vitejs/test-dep-conditions' },
             },
           },
@@ -84,7 +84,7 @@ describe('custom environment conditions', () => {
               import.meta.dirname,
               'fixtures/test-dep-conditions/dist/custom1_2',
             ),
-            rollupOptions: {
+            rolldownOptions: {
               input: { index: '@vitejs/test-dep-conditions' },
             },
           },
diff --git a/packages/vite/src/node/__tests__/plugins/index.spec.ts b/packages/vite/src/node/__tests__/plugins/index.spec.ts
index b682c8be7dda37..14aa568548e7a8 100644
--- a/packages/vite/src/node/__tests__/plugins/index.spec.ts
+++ b/packages/vite/src/node/__tests__/plugins/index.spec.ts
@@ -9,7 +9,7 @@ const getConfigWithPlugin = (
     configFile: false,
     server: { middlewareMode: true, ws: false },
     optimizeDeps: { noDiscovery: true, include: [] },
-    build: { rollupOptions: { input }, write: false },
+    build: { rolldownOptions: { input }, write: false },
     plugins,
     logLevel: 'silent',
   }
diff --git a/packages/vite/src/node/__tests__/plugins/modulePreloadPolyfill/modulePreloadPolyfill.spec.ts b/packages/vite/src/node/__tests__/plugins/modulePreloadPolyfill/modulePreloadPolyfill.spec.ts
index 6eb0c1598b113d..feafe4849f3914 100644
--- a/packages/vite/src/node/__tests__/plugins/modulePreloadPolyfill/modulePreloadPolyfill.spec.ts
+++ b/packages/vite/src/node/__tests__/plugins/modulePreloadPolyfill/modulePreloadPolyfill.spec.ts
@@ -8,7 +8,7 @@ const buildProject = ({ format = 'es' as ModuleFormat } = {}) =>
     logLevel: 'silent',
     build: {
       write: false,
-      rollupOptions: {
+      rolldownOptions: {
         input: 'main.js',
         output: {
           format,
diff --git a/packages/vite/src/node/__tests__/resolve.spec.ts b/packages/vite/src/node/__tests__/resolve.spec.ts
index 4c5465b00833ef..e4a377cf831d81 100644
--- a/packages/vite/src/node/__tests__/resolve.spec.ts
+++ b/packages/vite/src/node/__tests__/resolve.spec.ts
@@ -285,7 +285,7 @@ describe('file url', () => {
       build: {
         ssr: true,
         outDir: 'dist/basic',
-        rollupOptions: {
+        rolldownOptions: {
           input: { index: fileUrl.href },
         },
       },
@@ -300,7 +300,7 @@ describe('file url', () => {
       build: {
         ssr: true,
         outDir: 'dist/virtual',
-        rollupOptions: {
+        rolldownOptions: {
           input: { index: 'virtual:test-dep/static' },
         },
       },
diff --git a/packages/vite/src/node/build.ts b/packages/vite/src/node/build.ts
index 372de581d98db2..9d9927fd6a89e7 100644
--- a/packages/vite/src/node/build.ts
+++ b/packages/vite/src/node/build.ts
@@ -256,7 +256,7 @@ export interface BuildEnvironmentOptions {
   lib?: LibraryOptions | false
   /**
    * Produce SSR oriented build. Note this requires specifying SSR entry via
-   * `rollupOptions.input`.
+   * `rolldownOptions.input`.
    * @default false
    */
   ssr?: boolean | string
@@ -509,7 +509,7 @@ export async function resolveBuildPlugins(config: ResolvedConfig): Promise<{
         async (environment) =>
           (
             await asyncFlatten(
-              arraify(environment.config.build.rollupOptions.plugins),
+              arraify(environment.config.build.rolldownOptions.plugins),
             )
           ).filter(Boolean) as Plugin[],
       ),
@@ -573,7 +573,7 @@ function resolveRolldownOptions(
 
   const resolve = (p: string) => path.resolve(root, p)
   const input = libOptions
-    ? options.rollupOptions.input ||
+    ? options.rolldownOptions.input ||
       (typeof libOptions.entry === 'string'
         ? resolve(libOptions.entry)
         : Array.isArray(libOptions.entry)
@@ -586,11 +586,11 @@ function resolveRolldownOptions(
             ))
     : typeof options.ssr === 'string'
       ? resolve(options.ssr)
-      : options.rollupOptions.input || resolve('index.html')
+      : options.rolldownOptions.input || resolve('index.html')
 
   if (ssr && typeof input === 'string' && input.endsWith('.html')) {
     throw new Error(
-      `rollupOptions.input should not be an html file when building for SSR. ` +
+      `rolldownOptions.input should not be an html file when building for SSR. ` +
         `Please specify a dedicated SSR entry.`,
     )
   }
@@ -603,7 +603,7 @@ function resolveRolldownOptions(
           : Object.values(input)
     if (inputs.some((input) => input.endsWith('.css'))) {
       throw new Error(
-        `When "build.cssCodeSplit: false" is set, "rollupOptions.input" should not include CSS files.`,
+        `When "build.cssCodeSplit: false" is set, "rolldownOptions.input" should not include CSS files.`,
       )
     }
   }
@@ -615,48 +615,48 @@ function resolveRolldownOptions(
     injectEnvironmentToHooks(environment, chunkMetadataMap, p),
   )
 
-  const rollupOptions: RolldownOptions = {
+  const rolldownOptions: RolldownOptions = {
     preserveEntrySignatures: ssr
       ? 'allow-extension'
       : libOptions
         ? 'strict'
         : false,
     // cache: options.watch ? undefined : false,
-    ...options.rollupOptions,
-    output: options.rollupOptions.output,
+    ...options.rolldownOptions,
+    output: options.rolldownOptions.output,
     input,
     plugins,
-    external: options.rollupOptions.external,
+    external: options.rolldownOptions.external,
     onLog(level, log) {
       onRollupLog(level, log, environment)
     },
     transform: {
       target: options.target === false ? undefined : options.target,
-      ...options.rollupOptions.transform,
+      ...options.rolldownOptions.transform,
       define: {
-        ...options.rollupOptions.transform?.define,
+        ...options.rolldownOptions.transform?.define,
         // disable builtin process.env.NODE_ENV replacement as it is handled by the define plugin
         'process.env.NODE_ENV': 'process.env.NODE_ENV',
       },
     },
     // TODO: remove this and enable rolldown's CSS support later
     moduleTypes: {
-      ...options.rollupOptions.moduleTypes,
+      ...options.rolldownOptions.moduleTypes,
       '.css': 'js',
     },
     experimental: {
-      ...options.rollupOptions.experimental,
+      ...options.rolldownOptions.experimental,
       viteMode: true,
     },
     optimization: {
       inlineConst:
-        typeof options.rollupOptions.optimization?.inlineConst === 'boolean'
-          ? options.rollupOptions.optimization.inlineConst
+        typeof options.rolldownOptions.optimization?.inlineConst === 'boolean'
+          ? options.rolldownOptions.optimization.inlineConst
           : {
               mode: 'smart',
-              ...options.rollupOptions.optimization?.inlineConst,
+              ...options.rolldownOptions.optimization?.inlineConst,
             },
-      ...options.rollupOptions.optimization,
+      ...options.rolldownOptions.optimization,
     },
   }
 
@@ -668,21 +668,21 @@ function resolveRolldownOptions(
     // @ts-expect-error See https://github.com/vitejs/vite/issues/5812#issuecomment-984345618
     if (output.output) {
       logger.warn(
-        `You've set "rollupOptions.output.output" in your config. ` +
+        `You've set "rolldownOptions.output.output" in your config. ` +
           `This is deprecated and will override all Vite.js default output options. ` +
-          `Please use "rollupOptions.output" instead.`,
+          `Please use "rolldownOptions.output" instead.`,
       )
     }
     if (output.file) {
       throw new Error(
-        `Vite does not support "rollupOptions.output.file". ` +
-          `Please use "rollupOptions.output.dir" and "rollupOptions.output.entryFileNames" instead.`,
+        `Vite does not support "rolldownOptions.output.file". ` +
+          `Please use "rolldownOptions.output.dir" and "rolldownOptions.output.entryFileNames" instead.`,
       )
     }
     if (output.sourcemap) {
       logger.warnOnce(
         colors.yellow(
-          `Vite does not support "rollupOptions.output.sourcemap". ` +
+          `Vite does not support "rolldownOptions.output.sourcemap". ` +
             `Please use "build.sourcemap" instead.`,
         ),
       )
@@ -756,18 +756,18 @@ function resolveRolldownOptions(
 
   // resolve lib mode outputs
   const outputs = resolveBuildOutputs(
-    options.rollupOptions.output,
+    options.rolldownOptions.output,
     libOptions,
     logger,
   )
 
   if (Array.isArray(outputs)) {
-    rollupOptions.output = outputs.map(buildOutputOptions)
+    rolldownOptions.output = outputs.map(buildOutputOptions)
   } else {
-    rollupOptions.output = buildOutputOptions(outputs)
+    rolldownOptions.output = buildOutputOptions(outputs)
   }
 
-  return rollupOptions
+  return rolldownOptions
 }
 
 /**
@@ -791,7 +791,10 @@ async function buildEnvironment(
   let startTime: number | undefined
   try {
     const chunkMetadataMap = new ChunkMetadataMap()
-    const rollupOptions = resolveRolldownOptions(environment, chunkMetadataMap)
+    const rolldownOptions = resolveRolldownOptions(
+      environment,
+      chunkMetadataMap,
+    )
 
     // watch file changes with rollup
     if (options.watch) {
@@ -800,7 +803,7 @@ async function buildEnvironment(
       const resolvedOutDirs = getResolvedOutDirs(
         root,
         options.outDir,
-        options.rollupOptions.output,
+        options.rolldownOptions.output,
       )
       const emptyOutDir = resolveEmptyOutDir(
         options.emptyOutDir,
@@ -811,7 +814,7 @@ async function buildEnvironment(
       const resolvedChokidarOptions = resolveChokidarOptions(
         {
           // @ts-expect-error chokidar option does not exist in rolldown but used for backward compat
-          ...(rollupOptions.watch || {}).chokidar,
+          ...(rolldownOptions.watch || {}).chokidar,
           // @ts-expect-error chokidar option does not exist in rolldown but used for backward compat
           ...options.watch.chokidar,
         },
@@ -822,9 +825,9 @@ async function buildEnvironment(
 
       const { watch } = await import('rolldown')
       const watcher = watch({
-        ...rollupOptions,
+        ...rolldownOptions,
         watch: {
-          ...rollupOptions.watch,
+          ...rolldownOptions.watch,
           ...options.watch,
           notify: convertToNotifyOptions(resolvedChokidarOptions),
         },
@@ -851,10 +854,10 @@ async function buildEnvironment(
     // write or generate files with rolldown
     const { rolldown } = await import('rolldown')
     startTime = Date.now()
-    bundle = await rolldown(rollupOptions)
+    bundle = await rolldown(rolldownOptions)
 
     const res: RolldownOutput[] = []
-    for (const output of arraify(rollupOptions.output!)) {
+    for (const output of arraify(rolldownOptions.output!)) {
       res.push(await bundle[options.write ? 'write' : 'generate'](output))
     }
     for (const output of res) {
@@ -867,7 +870,7 @@ async function buildEnvironment(
     logger.info(
       `${colors.green(`✓ built in ${displayTime(Date.now() - startTime)}`)}`,
     )
-    return Array.isArray(rollupOptions.output) ? res : res[0]
+    return Array.isArray(rolldownOptions.output) ? res : res[0]
   } catch (e) {
     enhanceRollupError(e)
     clearLine()
@@ -1023,7 +1026,7 @@ export function resolveBuildOutputs(
     if (libOptions.formats) {
       logger.warn(
         colors.yellow(
-          '"build.lib.formats" will be ignored because "build.rollupOptions.output" is already an array format.',
+          '"build.lib.formats" will be ignored because "build.rolldownOptions.output" is already an array format.',
         ),
       )
     }
@@ -1034,7 +1037,7 @@ export function resolveBuildOutputs(
         !output.name
       ) {
         throw new Error(
-          'Entries in "build.rollupOptions.output" must specify "name" when the format is "umd" or "iife".',
+          'Entries in "build.rolldownOptions.output" must specify "name" when the format is "umd" or "iife".',
         )
       }
     })
@@ -1076,7 +1079,7 @@ export function onRollupLog(
           `[vite]: Rolldown failed to resolve import "${exporter}" from "${id}".\n` +
             `This is most likely unintended because it can break your application at runtime.\n` +
             `If you do want to externalize this module explicitly add it to\n` +
-            `\`build.rollupOptions.external\``,
+            `\`build.rolldownOptions.external\``,
         )
       }
     }
@@ -1124,8 +1127,8 @@ export function onRollupLog(
   }
 
   clearLine()
-  const userOnLog = environment.config.build.rollupOptions?.onLog
-  const userOnWarn = environment.config.build.rollupOptions?.onwarn
+  const userOnLog = environment.config.build.rolldownOptions?.onLog
+  const userOnWarn = environment.config.build.rolldownOptions?.onwarn
   if (userOnLog) {
     if (userOnWarn) {
       const normalizedUserOnWarn = normalizeUserOnWarn(userOnWarn, viteLog)
diff --git a/packages/vite/src/node/cli.ts b/packages/vite/src/node/cli.ts
index ecfd3bc75da267..8f701540c63ecb 100644
--- a/packages/vite/src/node/cli.ts
+++ b/packages/vite/src/node/cli.ts
@@ -309,8 +309,8 @@ cli
   )
   .option(
     '--minify [minifier]',
-    `[boolean | "terser" | "esbuild"] enable/disable minification, ` +
-      `or specify minifier to use (default: esbuild)`,
+    `[boolean | "terser" | "oxc" | "esbuild"] enable/disable minification, ` +
+      `or specify minifier to use (default: oxc)`,
   )
   .option('--manifest [name]', `[boolean | string] emit build manifest json`)
   .option('--ssrManifest [name]', `[boolean | string] emit ssr manifest json`)
diff --git a/packages/vite/src/node/config.ts b/packages/vite/src/node/config.ts
index c23f4bd996503c..ec171e9da15625 100644
--- a/packages/vite/src/node/config.ts
+++ b/packages/vite/src/node/config.ts
@@ -790,7 +790,7 @@ const configDefaults = Object.freeze({
   worker: {
     format: 'iife',
     plugins: (): never[] => [],
-    // rollupOptions
+    // rolldownOptions
   },
   optimizeDeps: {
     include: [],
@@ -1737,8 +1737,8 @@ export async function resolveConfig(
   } = {
     format: config.worker?.format || 'iife',
     plugins: createWorkerPlugins,
-    rollupOptions: config.worker?.rollupOptions || {},
-    rolldownOptions: config.worker?.rolldownOptions, // will be set by setupRollupOptionCompat if undefined
+    rolldownOptions: config.worker?.rolldownOptions || {},
+    rollupOptions: config.worker?.rollupOptions, // will be set by setupRollupOptionCompat if undefined
   }
   setupRollupOptionCompat(resolvedWorkerOptions, 'worker')
 
@@ -1986,7 +1986,7 @@ export async function resolveConfig(
 
   // Check if all assetFileNames have the same reference.
   // If not, display a warn for user.
-  const outputOption = config.build?.rollupOptions?.output ?? []
+  const outputOption = config.build?.rolldownOptions?.output ?? []
   // Use isArray to narrow its type to array
   if (Array.isArray(outputOption)) {
     const assetFileNamesList = outputOption.map(
@@ -2000,7 +2000,7 @@ export async function resolveConfig(
       if (hasDifferentReference) {
         resolved.logger.warn(
           colors.yellow(`
-assetFileNames isn't equal for every build.rollupOptions.output. A single pattern across all outputs is supported by Vite.
+assetFileNames isn't equal for every build.rolldownOptions.output. A single pattern across all outputs is supported by Vite.
 `),
         )
       }
diff --git a/packages/vite/src/node/optimizer/index.ts b/packages/vite/src/node/optimizer/index.ts
index 9dbb835c069f5f..eaf01bfec6a28d 100644
--- a/packages/vite/src/node/optimizer/index.ts
+++ b/packages/vite/src/node/optimizer/index.ts
@@ -168,7 +168,7 @@ export interface DepOptimizationConfig {
 export type DepOptimizationOptions = DepOptimizationConfig & {
   /**
    * By default, Vite will crawl your `index.html` to detect dependencies that
-   * need to be pre-bundled. If `build.rollupOptions.input` is specified, Vite
+   * need to be pre-bundled. If `build.rolldownOptions.input` is specified, Vite
    * will crawl those entry points instead.
    *
    * If neither of these fit your needs, you can specify custom entries using
diff --git a/packages/vite/src/node/optimizer/scan.ts b/packages/vite/src/node/optimizer/scan.ts
index 59df4e909fb413..238152d22a53b5 100644
--- a/packages/vite/src/node/optimizer/scan.ts
+++ b/packages/vite/src/node/optimizer/scan.ts
@@ -130,7 +130,7 @@ export function scanImports(environment: ScanEnvironment): {
       if (!config.optimizeDeps.entries && !config.optimizeDeps.include) {
         environment.logger.warn(
           colors.yellow(
-            '(!) Could not auto-determine entry point from rollupOptions or html files ' +
+            '(!) Could not auto-determine entry point from rolldownOptions or html files ' +
               'and there are no explicit optimizeDeps.include patterns. ' +
               'Skipping dependency pre-bundling.',
           ),
@@ -195,7 +195,7 @@ async function computeEntries(environment: ScanEnvironment) {
   let entries: string[] = []
 
   const explicitEntryPatterns = environment.config.optimizeDeps.entries
-  const buildInput = environment.config.build.rollupOptions.input
+  const buildInput = environment.config.build.rolldownOptions.input
 
   if (explicitEntryPatterns) {
     entries = await globEntries(explicitEntryPatterns, environment)
@@ -214,7 +214,7 @@ async function computeEntries(environment: ScanEnvironment) {
       )?.id
       if (id === undefined) {
         throw new Error(
-          `failed to resolve rollupOptions.input value: ${JSON.stringify(p)}.`,
+          `failed to resolve rolldownOptions.input value: ${JSON.stringify(p)}.`,
         )
       }
       return id
@@ -226,7 +226,7 @@ async function computeEntries(environment: ScanEnvironment) {
     } else if (isObject(buildInput)) {
       entries = await Promise.all(Object.values(buildInput).map(resolvePath))
     } else {
-      throw new Error('invalid rollupOptions.input value.')
+      throw new Error('invalid rolldownOptions.input value.')
     }
   } else {
     entries = await globEntries('**/*.html', environment)
diff --git a/packages/vite/src/node/plugins/css.ts b/packages/vite/src/node/plugins/css.ts
index 3f321fd551d5b1..2d650c783073c3 100644
--- a/packages/vite/src/node/plugins/css.ts
+++ b/packages/vite/src/node/plugins/css.ts
@@ -401,9 +401,9 @@ export function cssPlugin(config: ResolvedConfig): Plugin {
             return [url, resolved]
           }
           if (config.command === 'build') {
-            const isExternal = config.build.rollupOptions.external
+            const isExternal = config.build.rolldownOptions.external
               ? resolveUserExternal(
-                  config.build.rollupOptions.external,
+                  config.build.rolldownOptions.external,
                   decodedUrl, // use URL as id since id could not be resolved
                   id,
                   false,
@@ -467,11 +467,11 @@ export function cssPostPlugin(config: ResolvedConfig): Plugin {
   let hasEmitted = false
   let chunkCSSMap: Map<string, string>
 
-  const rollupOptionsOutput = config.build.rollupOptions.output
+  const rolldownOptionsOutput = config.build.rolldownOptions.output
   const assetFileNames = (
-    Array.isArray(rollupOptionsOutput)
-      ? rollupOptionsOutput[0]
-      : rollupOptionsOutput
+    Array.isArray(rolldownOptionsOutput)
+      ? rolldownOptionsOutput[0]
+      : rolldownOptionsOutput
   )?.assetFileNames
   const getCssAssetDirname = (cssAssetName: string) => {
     const cssAssetNameDir = path.dirname(cssAssetName)
diff --git a/packages/vite/src/node/plugins/html.ts b/packages/vite/src/node/plugins/html.ts
index 02305b45387c38..4ae35ba746819a 100644
--- a/packages/vite/src/node/plugins/html.ts
+++ b/packages/vite/src/node/plugins/html.ts
@@ -444,7 +444,9 @@ export function buildHtmlPlugin(config: ResolvedConfig): Plugin {
         // for each encountered asset url, rewrite original html so that it
         // references the post-build location, ignoring empty attributes and
         // attributes that directly reference named output.
-        const namedOutput = Object.keys(config.build.rollupOptions.input || {})
+        const namedOutput = Object.keys(
+          config.build.rolldownOptions.input || {},
+        )
         const processAssetUrl = async (url: string, shouldInline?: boolean) => {
           if (
             url !== '' && // Empty attribute
diff --git a/packages/vite/src/node/plugins/manifest.ts b/packages/vite/src/node/plugins/manifest.ts
index 59a23d99dd8ed6..c34914044dcc19 100644
--- a/packages/vite/src/node/plugins/manifest.ts
+++ b/packages/vite/src/node/plugins/manifest.ts
@@ -294,7 +294,7 @@ export function manifestPlugin(config: ResolvedConfig): Plugin {
       }
 
       state.outputCount++
-      const output = buildOptions.rollupOptions.output
+      const output = buildOptions.rolldownOptions.output
       const outputLength = Array.isArray(output) ? output.length : 1
       if (state.outputCount >= outputLength) {
         this.emitFile({
diff --git a/packages/vite/src/node/plugins/prepareOutDir.ts b/packages/vite/src/node/plugins/prepareOutDir.ts
index 9ee4b3c4b9419c..f03bf4d5dc48eb 100644
--- a/packages/vite/src/node/plugins/prepareOutDir.ts
+++ b/packages/vite/src/node/plugins/prepareOutDir.ts
@@ -28,7 +28,7 @@ export function prepareOutDirPlugin(): Plugin {
           const resolvedOutDirs = getResolvedOutDirs(
             root,
             options.outDir,
-            options.rollupOptions.output,
+            options.rolldownOptions.output,
           )
           const emptyOutDir = resolveEmptyOutDir(
             options.emptyOutDir,
diff --git a/packages/vite/src/node/plugins/reporter.ts b/packages/vite/src/node/plugins/reporter.ts
index f5ba407619ff24..75ea1a8a81af6f 100644
--- a/packages/vite/src/node/plugins/reporter.ts
+++ b/packages/vite/src/node/plugins/reporter.ts
@@ -284,7 +284,7 @@ export function buildReporterPlugin(config: ResolvedConfig): Plugin {
             colors.yellow(
               `\n(!) Some chunks are larger than ${chunkLimit} kB after minification. Consider:\n` +
                 `- Using dynamic import() to code-split the application\n` +
-                `- Use build.rollupOptions.output.manualChunks to improve chunking: https://rollupjs.org/configuration-options/#output-manualchunks\n` +
+                `- Use build.rolldownOptions.output.advancedChunks to improve chunking: https://rolldown.rs/options/output-advanced-chunks\n` +
                 `- Adjust chunk size limit for this warning via build.chunkSizeWarningLimit.`,
             ),
           )
diff --git a/packages/vite/src/node/plugins/worker.ts b/packages/vite/src/node/plugins/worker.ts
index e311b93fd27168..48592181b9d4a6 100644
--- a/packages/vite/src/node/plugins/worker.ts
+++ b/packages/vite/src/node/plugins/worker.ts
@@ -183,14 +183,14 @@ async function bundleWorkerEntry(
 
   // bundle the file as entry to support imports
   const { rolldown } = await import('rolldown')
-  const { plugins, rollupOptions, format } = config.worker
+  const { plugins, rolldownOptions, format } = config.worker
   const workerConfig = await plugins(newBundleChain)
   const workerEnvironment = new BuildEnvironment('client', workerConfig) // TODO: should this be 'worker'?
   await workerEnvironment.init()
 
   const chunkMetadataMap = new ChunkMetadataMap()
   const bundle = await rolldown({
-    ...rollupOptions,
+    ...rolldownOptions,
     input,
     plugins: workerEnvironment.plugins.map((p) =>
       injectEnvironmentToHooks(workerEnvironment, chunkMetadataMap, p),
@@ -201,14 +201,14 @@ async function bundleWorkerEntry(
     // TODO: remove this and enable rolldown's CSS support later
     moduleTypes: {
       '.css': 'js',
-      ...rollupOptions.moduleTypes,
+      ...rolldownOptions.moduleTypes,
     },
     preserveEntrySignatures: false,
   })
   let result: RolldownOutput
   let watchedFiles: string[] | undefined
   try {
-    const workerOutputConfig = config.worker.rollupOptions.output
+    const workerOutputConfig = config.worker.rolldownOptions.output
     const workerConfig = workerOutputConfig
       ? Array.isArray(workerOutputConfig)
         ? workerOutputConfig[0] || {}
diff --git a/packages/vite/src/node/server/index.ts b/packages/vite/src/node/server/index.ts
index 06a8ff27773cd0..b2bbf406346e4f 100644
--- a/packages/vite/src/node/server/index.ts
+++ b/packages/vite/src/node/server/index.ts
@@ -469,7 +469,7 @@ export async function _createServer(
   const resolvedOutDirs = getResolvedOutDirs(
     config.root,
     config.build.outDir,
-    config.build.rollupOptions.output,
+    config.build.rolldownOptions.output,
   )
   const emptyOutDir = resolveEmptyOutDir(
     config.build.emptyOutDir,
diff --git a/packages/vite/src/node/server/pluginContainer.ts b/packages/vite/src/node/server/pluginContainer.ts
index f653a00b8811f7..7344d5f27fce66 100644
--- a/packages/vite/src/node/server/pluginContainer.ts
+++ b/packages/vite/src/node/server/pluginContainer.ts
@@ -161,7 +161,7 @@ export async function createEnvironmentPluginContainer<
     watcher,
     autoStart,
   )
-  await container.resolveRollupOptions()
+  await container.resolveRolldownOptions()
   return container
 }
 
@@ -174,7 +174,7 @@ export type SkipInformation = {
 
 class EnvironmentPluginContainer<Env extends Environment = Environment> {
   private _pluginContextMap = new Map<Plugin, PluginContext>()
-  private _resolvedRollupOptions?: InputOptions
+  private _resolvedRolldownOptions?: InputOptions
   private _processesing = new Set<Promise<any>>()
   private _seenResolves: Record<string, true | undefined> = {}
 
@@ -273,12 +273,12 @@ class EnvironmentPluginContainer<Env extends Environment = Environment> {
   }
 
   get options(): InputOptions {
-    return this._resolvedRollupOptions!
+    return this._resolvedRolldownOptions!
   }
 
-  async resolveRollupOptions(): Promise<InputOptions> {
-    if (!this._resolvedRollupOptions) {
-      let options = this.environment.config.build.rollupOptions
+  async resolveRolldownOptions(): Promise<InputOptions> {
+    if (!this._resolvedRolldownOptions) {
+      let options = this.environment.config.build.rolldownOptions
       for (const optionsHook of this.getSortedPluginHooks('options')) {
         if (this._closed) {
           throwClosedServerError()
@@ -288,9 +288,9 @@ class EnvironmentPluginContainer<Env extends Environment = Environment> {
             optionsHook.call(this.minimalContext, options),
           )) || options
       }
-      this._resolvedRollupOptions = options
+      this._resolvedRolldownOptions = options
     }
-    return this._resolvedRollupOptions
+    return this._resolvedRolldownOptions
   }
 
   private _getPluginContext(plugin: Plugin) {
diff --git a/packages/vite/src/node/utils.ts b/packages/vite/src/node/utils.ts
index 5aafdb29dcd9e5..8ca0df38a8377d 100644
--- a/packages/vite/src/node/utils.ts
+++ b/packages/vite/src/node/utils.ts
@@ -1238,7 +1238,7 @@ const rollupOptionsDeprecationCall = (() => {
     const method = process.env.VITE_DEPRECATION_TRACE ? 'trace' : 'warn'
     // eslint-disable-next-line no-console
     console[method](
-      '`optimizeDeps.rollupOptions` / `ssr.optimizeDeps.rollupOptions` is deprecated. ' +
+      '`optimizeDeps.rolldownOptions` / `ssr.optimizeDeps.rollupOptions` is deprecated. ' +
         'Use `optimizeDeps.rolldownOptions` instead. Note that this option may be set by a plugin. ' +
         (method === 'trace'
           ? 'Showing trace because VITE_DEPRECATION_TRACE is set.'
diff --git a/playground/assets/vite.config-encoded-base.js b/playground/assets/vite.config-encoded-base.js
index 70e86eeb90eb37..9a9cc37a1b1831 100644
--- a/playground/assets/vite.config-encoded-base.js
+++ b/playground/assets/vite.config-encoded-base.js
@@ -18,7 +18,7 @@ export default defineConfig({
     watch: null,
     minify: false,
     assetsInlineLimit: 0,
-    rollupOptions: {
+    rolldownOptions: {
       output: {
         entryFileNames: 'entries/[name].js',
         chunkFileNames: 'chunks/[name]-[hash].js',
diff --git a/playground/assets/vite.config-relative-base.js b/playground/assets/vite.config-relative-base.js
index dabaedb26136b3..e0b2b2d03e7d0e 100644
--- a/playground/assets/vite.config-relative-base.js
+++ b/playground/assets/vite.config-relative-base.js
@@ -10,7 +10,7 @@ export default defineConfig(({ isPreview }) => ({
     watch: null,
     minify: false,
     assetsInlineLimit: 0,
-    rollupOptions: {
+    rolldownOptions: {
       output: {
         entryFileNames: 'entries/[name].js',
         chunkFileNames: 'chunks/[name]-[hash].js',
diff --git a/playground/assets/vite.config-runtime-base.js b/playground/assets/vite.config-runtime-base.js
index 5113ccebc68c3d..8fbed84bcdb860 100644
--- a/playground/assets/vite.config-runtime-base.js
+++ b/playground/assets/vite.config-runtime-base.js
@@ -15,7 +15,7 @@ export default defineConfig({
     watch: null,
     minify: false,
     assetsInlineLimit: 0,
-    rollupOptions: {
+    rolldownOptions: {
       output: {
         entryFileNames: 'entries/[name].js',
         chunkFileNames: 'chunks/[name]-[hash].js',
diff --git a/playground/assets/vite.config-url-base.js b/playground/assets/vite.config-url-base.js
index 14d24feae4298d..93f905f6abceb2 100644
--- a/playground/assets/vite.config-url-base.js
+++ b/playground/assets/vite.config-url-base.js
@@ -17,7 +17,7 @@ export default defineConfig({
     watch: null,
     minify: false,
     assetsInlineLimit: 0,
-    rollupOptions: {
+    rolldownOptions: {
       output: {
         entryFileNames: 'entries/[name].js',
         chunkFileNames: 'chunks/[name]-[hash].js',
diff --git a/playground/backend-integration/vite.config.js b/playground/backend-integration/vite.config.js
index 7560c31541ac22..0c6ce057c1563c 100644
--- a/playground/backend-integration/vite.config.js
+++ b/playground/backend-integration/vite.config.js
@@ -41,7 +41,7 @@ function BackendIntegrationExample() {
         build: {
           manifest: true,
           outDir,
-          rollupOptions: {
+          rolldownOptions: {
             input: Object.fromEntries(entrypoints),
           },
         },
diff --git a/playground/css-codesplit-cjs/vite.config.js b/playground/css-codesplit-cjs/vite.config.js
index 0c8a0cbf562a4b..d0b1bf2955093a 100644
--- a/playground/css-codesplit-cjs/vite.config.js
+++ b/playground/css-codesplit-cjs/vite.config.js
@@ -5,7 +5,7 @@ export default defineConfig({
   build: {
     outDir: './dist',
     manifest: true,
-    rollupOptions: {
+    rolldownOptions: {
       input: {
         main: resolve(__dirname, './index.html'),
         other: resolve(__dirname, './other.js'),
diff --git a/playground/css-codesplit/vite.config.js b/playground/css-codesplit/vite.config.js
index 0d3d006e4dda7f..bc7b8a923827f7 100644
--- a/playground/css-codesplit/vite.config.js
+++ b/playground/css-codesplit/vite.config.js
@@ -4,7 +4,7 @@ import { defineConfig } from 'vite'
 export default defineConfig({
   build: {
     manifest: true,
-    rollupOptions: {
+    rolldownOptions: {
       input: {
         main: resolve(__dirname, './index.html'),
         other: resolve(__dirname, './other.js'),
diff --git a/playground/css-no-codesplit/vite.config.js b/playground/css-no-codesplit/vite.config.js
index f48d875832b928..4b7720554a40be 100644
--- a/playground/css-no-codesplit/vite.config.js
+++ b/playground/css-no-codesplit/vite.config.js
@@ -4,7 +4,7 @@ import { defineConfig } from 'vite'
 export default defineConfig({
   build: {
     cssCodeSplit: false,
-    rollupOptions: {
+    rolldownOptions: {
       input: {
         index: resolve(__dirname, './index.html'),
         sub: resolve(__dirname, './sub.html'),
diff --git a/playground/css/vite.config-relative-base.js b/playground/css/vite.config-relative-base.js
index 451ca7090d023a..8b3656c8f64309 100644
--- a/playground/css/vite.config-relative-base.js
+++ b/playground/css/vite.config-relative-base.js
@@ -10,7 +10,7 @@ export default defineConfig(({ isPreview }) => ({
     watch: null,
     minify: false,
     assetsInlineLimit: 0,
-    rollupOptions: {
+    rolldownOptions: {
       output: {
         entryFileNames: 'entries/[name].js',
         chunkFileNames: 'chunks/[name]-[hash].js',
diff --git a/playground/css/vite.config-same-file-name.js b/playground/css/vite.config-same-file-name.js
index f8e88d23b973be..75f4ab214a0148 100644
--- a/playground/css/vite.config-same-file-name.js
+++ b/playground/css/vite.config-same-file-name.js
@@ -6,7 +6,7 @@ export default defineConfig({
   build: {
     ...baseConfig.build,
     outDir: 'dist/same-file-name',
-    rollupOptions: {
+    rolldownOptions: {
       output: {
         entryFileNames: '[name].js',
         chunkFileNames: '[name].[hash].js',
diff --git a/playground/css/vite.config-sass-modern-compiler-build.js b/playground/css/vite.config-sass-modern-compiler-build.js
index 412be2815eb339..35950a8041b012 100644
--- a/playground/css/vite.config-sass-modern-compiler-build.js
+++ b/playground/css/vite.config-sass-modern-compiler-build.js
@@ -4,7 +4,7 @@ import { defineConfig } from 'vite'
 export default defineConfig({
   build: {
     outDir: 'dist/sass-modern-compiler-build',
-    rollupOptions: {
+    rolldownOptions: {
       input: {
         entry1: path.join(
           import.meta.dirname,
diff --git a/playground/css/vite.config.js b/playground/css/vite.config.js
index 993ed630670f56..c9f9c75719bcbd 100644
--- a/playground/css/vite.config.js
+++ b/playground/css/vite.config.js
@@ -39,7 +39,7 @@ export default defineConfig({
   ],
   build: {
     cssTarget: 'chrome61',
-    rollupOptions: {
+    rolldownOptions: {
       input: {
         index: path.resolve(__dirname, './index.html'),
         treeshakeScoped: path.resolve(
diff --git a/playground/dynamic-import-inline/vite.config.js b/playground/dynamic-import-inline/vite.config.js
index 2d69e108f59e01..fa7b47f81c53ce 100644
--- a/playground/dynamic-import-inline/vite.config.js
+++ b/playground/dynamic-import-inline/vite.config.js
@@ -9,7 +9,7 @@ export default defineConfig({
   },
   build: {
     sourcemap: true,
-    rollupOptions: {
+    rolldownOptions: {
       output: {
         inlineDynamicImports: true,
       },
diff --git a/playground/environment-react-ssr/vite.config.ts b/playground/environment-react-ssr/vite.config.ts
index 7803dc15ae9016..feb370e9bddab7 100644
--- a/playground/environment-react-ssr/vite.config.ts
+++ b/playground/environment-react-ssr/vite.config.ts
@@ -50,7 +50,7 @@ export default defineConfig((env) => ({
       },
       build: {
         outDir: 'dist/server',
-        rollupOptions: {
+        rolldownOptions: {
           input: {
             index: '/src/entry-server',
           },
diff --git a/playground/external/vite.config.js b/playground/external/vite.config.js
index d79decb009ca6d..a43ac5d748ccc0 100644
--- a/playground/external/vite.config.js
+++ b/playground/external/vite.config.js
@@ -28,7 +28,7 @@ export default defineConfig({
   },
   build: {
     minify: false,
-    rollupOptions: {
+    rolldownOptions: {
       external: ['vue', 'slash3', 'slash5'],
       transform: {
         inject: {
diff --git a/playground/fs-serve/root/vite.config-base.js b/playground/fs-serve/root/vite.config-base.js
index 1dd2f99b9f9124..495efa2566e0fa 100644
--- a/playground/fs-serve/root/vite.config-base.js
+++ b/playground/fs-serve/root/vite.config-base.js
@@ -7,7 +7,7 @@ const BASE = '/base/'
 export default defineConfig({
   base: BASE,
   build: {
-    rollupOptions: {
+    rolldownOptions: {
       input: {
         main: path.resolve(__dirname, 'src/index.html'),
       },
diff --git a/playground/fs-serve/root/vite.config-deny.js b/playground/fs-serve/root/vite.config-deny.js
index 11698cef800ec3..a4d51384f9a3b4 100644
--- a/playground/fs-serve/root/vite.config-deny.js
+++ b/playground/fs-serve/root/vite.config-deny.js
@@ -4,7 +4,7 @@ import svgVirtualModulePlugin from './svgVirtualModulePlugin'
 
 export default defineConfig({
   build: {
-    rollupOptions: {
+    rolldownOptions: {
       input: {
         main: path.resolve(__dirname, 'src/index.html'),
       },
diff --git a/playground/fs-serve/root/vite.config.js b/playground/fs-serve/root/vite.config.js
index ac4eaac97c1d61..91a8721db5eeca 100644
--- a/playground/fs-serve/root/vite.config.js
+++ b/playground/fs-serve/root/vite.config.js
@@ -4,7 +4,7 @@ import svgVirtualModulePlugin from './svgVirtualModulePlugin'
 
 export default defineConfig({
   build: {
-    rollupOptions: {
+    rolldownOptions: {
       input: {
         main: path.resolve(__dirname, 'src/index.html'),
       },
diff --git a/playground/glob-import/vite.config.ts b/playground/glob-import/vite.config.ts
index 99317f08a0031e..19f3ad98bb9254 100644
--- a/playground/glob-import/vite.config.ts
+++ b/playground/glob-import/vite.config.ts
@@ -24,7 +24,7 @@ export default defineConfig({
   },
   build: {
     sourcemap: true,
-    rollupOptions: {
+    rolldownOptions: {
       output: {
         // manualChunks(id) {
         //   if (id.includes('foo.css')) {
diff --git a/playground/html/__tests__/html.spec.ts b/playground/html/__tests__/html.spec.ts
index 635b028db44e75..376e6de6226c13 100644
--- a/playground/html/__tests__/html.spec.ts
+++ b/playground/html/__tests__/html.spec.ts
@@ -123,7 +123,7 @@ describe('main', () => {
   })
 
   test.runIf(isBuild)(
-    'external paths by rollupOptions.external works',
+    'external paths by rolldownOptions.external works',
     async () => {
       expect(await page.textContent('.external-path-by-rollup-options')).toBe(
         'works',
@@ -426,7 +426,7 @@ describe('relative input', () => {
     await page.goto(viteTestUrl + '/relative-input.html')
   })
 
-  test('passing relative path to rollupOptions.input works', async () => {
+  test('passing relative path to rolldownOptions.input works', async () => {
     await expect.poll(() => page.textContent('.relative-input')).toBe('OK')
   })
 })
diff --git a/playground/html/index.html b/playground/html/index.html
index 37554e86e7cd76..1fde1920743e09 100644
--- a/playground/html/index.html
+++ b/playground/html/index.html
@@ -15,6 +15,6 @@ <h1>Hello</h1>
 <script type="module" vite-ignore></script>
 <link rel="stylesheet" href="/external-path.css" vite-ignore />
 <div>
-  External path by rollupOptions.external (build only):
+  External path by rolldownOptions.external (build only):
   <span class="external-path-by-rollup-options"></span>
 </div>
diff --git a/playground/html/vite.config.js b/playground/html/vite.config.js
index 11e433128074c3..9eb1af84b73f74 100644
--- a/playground/html/vite.config.js
+++ b/playground/html/vite.config.js
@@ -4,7 +4,7 @@ import { defineConfig } from 'vite'
 export default defineConfig({
   base: './',
   build: {
-    rollupOptions: {
+    rolldownOptions: {
       input: {
         main: resolve(__dirname, 'index.html'),
         nested: resolve(__dirname, 'nested/index.html'),
diff --git a/playground/js-sourcemap/after-preload-dynamic-hashbang.js b/playground/js-sourcemap/after-preload-dynamic-hashbang.js
index 918cdeff7932a4..f5cc79cbc76757 100644
--- a/playground/js-sourcemap/after-preload-dynamic-hashbang.js
+++ b/playground/js-sourcemap/after-preload-dynamic-hashbang.js
@@ -1,4 +1,4 @@
-// hashbang is injected via rollupOptions.output.banner
+// hashbang is injected via rolldownOptions.output.banner
 
 import('./dynamic/dynamic-foo')
 
diff --git a/playground/js-sourcemap/vite.config.js b/playground/js-sourcemap/vite.config.js
index 320a385bc074c9..5a0276f0a89308 100644
--- a/playground/js-sourcemap/vite.config.js
+++ b/playground/js-sourcemap/vite.config.js
@@ -9,7 +9,7 @@ export default defineConfig({
   ],
   build: {
     sourcemap: true,
-    rollupOptions: {
+    rolldownOptions: {
       output: {
         // manualChunks(name) {
         //   if (name.endsWith('after-preload-dynamic.js')) {
diff --git a/playground/legacy/vite.config-custom-filename.js b/playground/legacy/vite.config-custom-filename.js
index a4d14c8415d8fd..e4fa773933cac3 100644
--- a/playground/legacy/vite.config-custom-filename.js
+++ b/playground/legacy/vite.config-custom-filename.js
@@ -6,7 +6,7 @@ export default defineConfig({
   build: {
     manifest: true,
     minify: false,
-    rollupOptions: {
+    rolldownOptions: {
       output: {
         entryFileNames: `assets/[name].js`,
         chunkFileNames: `assets/[name].js`,
diff --git a/playground/legacy/vite.config-multiple-output.js b/playground/legacy/vite.config-multiple-output.js
index ae4d7d530adc8e..049c5b8ad01a61 100644
--- a/playground/legacy/vite.config-multiple-output.js
+++ b/playground/legacy/vite.config-multiple-output.js
@@ -6,7 +6,7 @@ export default defineConfig({
   build: {
     manifest: true,
     minify: false,
-    rollupOptions: {
+    rolldownOptions: {
       output: [
         {
           assetFileNames() {
diff --git a/playground/legacy/vite.config-no-polyfills-no-systemjs.js b/playground/legacy/vite.config-no-polyfills-no-systemjs.js
index 388ee5a3ba71a4..7f103e97931e2a 100644
--- a/playground/legacy/vite.config-no-polyfills-no-systemjs.js
+++ b/playground/legacy/vite.config-no-polyfills-no-systemjs.js
@@ -19,7 +19,7 @@ export default defineConfig(({ isPreview }) => ({
 
   build: {
     outDir: 'dist/no-polyfills-no-systemjs',
-    rollupOptions: {
+    rolldownOptions: {
       input: {
         index: path.resolve(__dirname, 'no-polyfills-no-systemjs.html'),
       },
diff --git a/playground/legacy/vite.config-no-polyfills.js b/playground/legacy/vite.config-no-polyfills.js
index a33a34aa20e556..6657990c336633 100644
--- a/playground/legacy/vite.config-no-polyfills.js
+++ b/playground/legacy/vite.config-no-polyfills.js
@@ -18,7 +18,7 @@ export default defineConfig(({ isPreview }) => ({
 
   build: {
     outDir: 'dist/no-polyfills',
-    rollupOptions: {
+    rolldownOptions: {
       input: {
         index: path.resolve(__dirname, 'no-polyfills.html'),
       },
diff --git a/playground/legacy/vite.config-watch.js b/playground/legacy/vite.config-watch.js
index 48d57f3e988edc..30c10fdf9551e6 100644
--- a/playground/legacy/vite.config-watch.js
+++ b/playground/legacy/vite.config-watch.js
@@ -6,7 +6,7 @@ export default defineConfig({
   plugins: [legacy()],
   build: {
     manifest: true,
-    rollupOptions: {
+    rolldownOptions: {
       input: {
         'style-only-entry': resolve(__dirname, 'style-only-entry.css'),
       },
diff --git a/playground/legacy/vite.config.js b/playground/legacy/vite.config.js
index d07d295a0a27d8..20e48c3d47bfb3 100644
--- a/playground/legacy/vite.config.js
+++ b/playground/legacy/vite.config.js
@@ -17,7 +17,7 @@ export default defineConfig({
     manifest: true,
     sourcemap: true,
     assetsInlineLimit: 100, // keep SVG as assets URL
-    rollupOptions: {
+    rolldownOptions: {
       input: {
         index: path.resolve(__dirname, 'index.html'),
         nested: path.resolve(__dirname, 'nested/index.html'),
diff --git a/playground/lib/vite.config.js b/playground/lib/vite.config.js
index 8961efc72fb6cd..5be97f86fb3127 100644
--- a/playground/lib/vite.config.js
+++ b/playground/lib/vite.config.js
@@ -15,7 +15,7 @@ export default defineConfig({
     // - object rest spread
     // - optional chaining
     target: 'chrome46',
-    rollupOptions: {
+    rolldownOptions: {
       output: {
         legalComments: 'inline',
         banner: `/*!\nMayLib\n*/`,
diff --git a/playground/lib/vite.multiple-output.config.js b/playground/lib/vite.multiple-output.config.js
index e986221ad6ca9b..03c896486a3be9 100644
--- a/playground/lib/vite.multiple-output.config.js
+++ b/playground/lib/vite.multiple-output.config.js
@@ -16,7 +16,7 @@ export default defineConfig({
       name: 'MyLib',
     },
     outDir: 'dist/multiple-output',
-    rollupOptions: {
+    rolldownOptions: {
       // due to playground-temp, the `dir` needs to be relative to the resolvedRoot
       output: [
         {
diff --git a/playground/minify/vite.config.js b/playground/minify/vite.config.js
index a23f2bc8147c0a..8013c4b67ecc99 100644
--- a/playground/minify/vite.config.js
+++ b/playground/minify/vite.config.js
@@ -8,7 +8,7 @@ export default defineConfig({
   build: {
     minify: 'esbuild',
     cssMinify: 'esbuild',
-    rollupOptions: {
+    rolldownOptions: {
       output: {
         legalComments: 'none',
       },
diff --git a/playground/multiple-entrypoints/vite.config.js b/playground/multiple-entrypoints/vite.config.js
index 3202cebc0ce4aa..8499417a1df178 100644
--- a/playground/multiple-entrypoints/vite.config.js
+++ b/playground/multiple-entrypoints/vite.config.js
@@ -5,7 +5,7 @@ export default defineConfig({
   build: {
     outDir: './dist',
     emptyOutDir: true,
-    rollupOptions: {
+    rolldownOptions: {
       preserveEntrySignatures: 'strict',
       input: {
         a0: resolve(__dirname, 'entrypoints/a0.js'),
diff --git a/playground/preload/vite.config-preload-disabled.js b/playground/preload/vite.config-preload-disabled.js
index 4ae19be2a3b482..99b5af0efbdd76 100644
--- a/playground/preload/vite.config-preload-disabled.js
+++ b/playground/preload/vite.config-preload-disabled.js
@@ -12,7 +12,7 @@ export default defineConfig({
         passes: 3,
       },
     },
-    rollupOptions: {
+    rolldownOptions: {
       output: {
         // manualChunks(id) {
         //   if (id.includes('chunk.js')) {
diff --git a/playground/preload/vite.config-resolve-deps.js b/playground/preload/vite.config-resolve-deps.js
index 5ef2a82147ae01..4c470bcf6eebe6 100644
--- a/playground/preload/vite.config-resolve-deps.js
+++ b/playground/preload/vite.config-resolve-deps.js
@@ -12,7 +12,7 @@ export default defineConfig({
         passes: 3,
       },
     },
-    rollupOptions: {
+    rolldownOptions: {
       output: {
         // manualChunks(id) {
         //   if (id.includes('chunk.js')) {
diff --git a/playground/preload/vite.config.ts b/playground/preload/vite.config.ts
index 0c27f0ab75c1ca..18f5b5445c7116 100644
--- a/playground/preload/vite.config.ts
+++ b/playground/preload/vite.config.ts
@@ -12,7 +12,7 @@ export default defineConfig({
         passes: 3,
       },
     },
-    rollupOptions: {
+    rolldownOptions: {
       output: {
         // manualChunks(id) {
         //   if (id.includes('chunk.js')) {
diff --git a/playground/ssr-noexternal/vite.config.js b/playground/ssr-noexternal/vite.config.js
index 1109bddd187001..06379eb1f1c93f 100644
--- a/playground/ssr-noexternal/vite.config.js
+++ b/playground/ssr-noexternal/vite.config.js
@@ -12,7 +12,7 @@ export default defineConfig({
   build: {
     target: 'esnext',
     minify: false,
-    rollupOptions: {
+    rolldownOptions: {
       external: ['@vitejs/test-external-cjs'],
     },
   },
diff --git a/playground/worker/vite.config-es.js b/playground/worker/vite.config-es.js
index 095d55f1562bc7..c73a4483664b5f 100644
--- a/playground/worker/vite.config-es.js
+++ b/playground/worker/vite.config-es.js
@@ -11,7 +11,7 @@ export default defineConfig({
   worker: {
     format: 'es',
     plugins: () => [workerPluginTestPlugin()],
-    rollupOptions: {
+    rolldownOptions: {
       output: {
         assetFileNames: 'assets/worker_asset-[name]-[hash].[ext]',
         chunkFileNames: 'assets/worker_chunk-[name]-[hash].js',
@@ -23,7 +23,7 @@ export default defineConfig({
     outDir: 'dist/es',
     assetsInlineLimit: (filePath) =>
       filePath.endsWith('.svg') ? false : undefined,
-    rollupOptions: {
+    rolldownOptions: {
       output: {
         assetFileNames: 'assets/[name]-[hash].[ext]',
         chunkFileNames: 'assets/[name]-[hash].js',
diff --git a/playground/worker/vite.config-iife.js b/playground/worker/vite.config-iife.js
index 289a53a36a101f..3e892a0d61b97d 100644
--- a/playground/worker/vite.config-iife.js
+++ b/playground/worker/vite.config-iife.js
@@ -11,7 +11,7 @@ export default defineConfig({
   worker: {
     format: 'iife',
     plugins: () => [workerPluginTestPlugin()],
-    rollupOptions: {
+    rolldownOptions: {
       output: {
         assetFileNames: 'assets/worker_asset-[name]-[hash].[ext]',
         chunkFileNames: 'assets/worker_chunk-[name]-[hash].js',
@@ -25,7 +25,7 @@ export default defineConfig({
     assetsInlineLimit: (filePath) =>
       filePath.endsWith('.svg') ? false : undefined,
     manifest: true,
-    rollupOptions: {
+    rolldownOptions: {
       output: {
         assetFileNames: 'assets/[name]-[hash].[ext]',
         chunkFileNames: 'assets/[name]-[hash].js',
@@ -40,7 +40,7 @@ export default defineConfig({
       config() {
         return {
           worker: {
-            rollupOptions: {
+            rolldownOptions: {
               output: {
                 entryFileNames: 'assets/worker_entry-[name].js',
               },
diff --git a/playground/worker/vite.config-relative-base-iife.js b/playground/worker/vite.config-relative-base-iife.js
index 657d7b3094acf6..85bad6b2c29fd2 100644
--- a/playground/worker/vite.config-relative-base-iife.js
+++ b/playground/worker/vite.config-relative-base-iife.js
@@ -11,7 +11,7 @@ export default defineConfig(({ isPreview }) => ({
   worker: {
     format: 'iife',
     plugins: () => [workerPluginTestPlugin()],
-    rollupOptions: {
+    rolldownOptions: {
       output: {
         assetFileNames: 'worker-assets/worker_asset-[name]-[hash].[ext]',
         chunkFileNames: 'worker-chunks/worker_chunk-[name]-[hash].js',
@@ -23,7 +23,7 @@ export default defineConfig(({ isPreview }) => ({
     outDir: 'dist/relative-base-iife',
     assetsInlineLimit: (filePath) =>
       filePath.endsWith('.svg') ? false : undefined,
-    rollupOptions: {
+    rolldownOptions: {
       output: {
         assetFileNames: 'other-assets/[name]-[hash].[ext]',
         chunkFileNames: 'chunks/[name]-[hash].js',
diff --git a/playground/worker/vite.config-relative-base.js b/playground/worker/vite.config-relative-base.js
index f4f22cc12e0cd9..dd16cce40384d1 100644
--- a/playground/worker/vite.config-relative-base.js
+++ b/playground/worker/vite.config-relative-base.js
@@ -11,7 +11,7 @@ export default defineConfig(({ isPreview }) => ({
   worker: {
     format: 'es',
     plugins: () => [workerPluginTestPlugin()],
-    rollupOptions: {
+    rolldownOptions: {
       output: {
         assetFileNames: 'worker-assets/worker_asset-[name]-[hash].[ext]',
         chunkFileNames: 'worker-chunks/worker_chunk-[name]-[hash].js',
@@ -23,7 +23,7 @@ export default defineConfig(({ isPreview }) => ({
     outDir: 'dist/relative-base',
     assetsInlineLimit: (filePath) =>
       filePath.endsWith('.svg') ? false : undefined,
-    rollupOptions: {
+    rolldownOptions: {
       output: {
         assetFileNames: 'other-assets/[name]-[hash].[ext]',
         chunkFileNames: 'chunks/[name]-[hash].js',
diff --git a/playground/worker/worker-sourcemap-config.js b/playground/worker/worker-sourcemap-config.js
index 2c4e40e78d2a5a..df8685a14a1156 100644
--- a/playground/worker/worker-sourcemap-config.js
+++ b/playground/worker/worker-sourcemap-config.js
@@ -25,7 +25,7 @@ export default (sourcemap) => {
     worker: {
       format: 'iife',
       plugins: () => [workerPluginTestPlugin()],
-      rollupOptions: {
+      rolldownOptions: {
         output: {
           assetFileNames: 'assets/[name]-worker_asset[hash].[ext]',
           chunkFileNames: 'assets/[name]-worker_chunk[hash].js',
@@ -38,7 +38,7 @@ export default (sourcemap) => {
       assetsInlineLimit: (filePath) =>
         filePath.endsWith('.svg') ? false : undefined,
       sourcemap: sourcemap,
-      rollupOptions: {
+      rolldownOptions: {
         output: {
           assetFileNames: 'assets/[name]-[hash].[ext]',
           chunkFileNames: 'assets/[name]-[hash].js',