diff --git a/common/changes/@itwin/imodel-browser-react/vp-fix-filtering-issue_2025-09-17-09-16.json b/common/changes/@itwin/imodel-browser-react/vp-fix-filtering-issue_2025-09-17-09-16.json
new file mode 100644
index 00000000..c5be9596
--- /dev/null
+++ b/common/changes/@itwin/imodel-browser-react/vp-fix-filtering-issue_2025-09-17-09-16.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/imodel-browser-react",
+      "comment": "Fix iModelGrid Filtering via postProcessCallback to Show Complete Results Across All Data",
+      "type": "patch"
+    }
+  ],
+  "packageName": "@itwin/imodel-browser-react"
+}
\ No newline at end of file
diff --git a/packages/modules/imodel-browser/src/containers/iModelGrid/IModelGrid.test.tsx b/packages/modules/imodel-browser/src/containers/iModelGrid/IModelGrid.test.tsx
index fb205f61..0576b836 100644
--- a/packages/modules/imodel-browser/src/containers/iModelGrid/IModelGrid.test.tsx
+++ b/packages/modules/imodel-browser/src/containers/iModelGrid/IModelGrid.test.tsx
@@ -4,10 +4,10 @@
  *--------------------------------------------------------------------------------------------*/
 import "@testing-library/jest-dom";
 
-import { render } from "@testing-library/react";
+import { render, waitFor } from "@testing-library/react";
 import React from "react";
 
-import { DataStatus, IModelCellOverrides, IModelGrid } from "../..";
+import { DataStatus, IModelCellOverrides, IModelFull, IModelGrid } from "../..";
 import * as useIModelData from "./useIModelData";
 
 describe("IModelGrid", () => {
@@ -185,4 +185,120 @@ describe("IModelGrid", () => {
     menuItems = queryAllByRole("menuitem");
     expect(menuItems.length).toBe(2); // Action 1 and Action 2
   });
+
+  const generateMockIModels = (count: number, prefix = ""): IModelFull[] => {
+    return Array.from({ length: count }).map((_, index) => ({
+      id: `${prefix}${index}`,
+      displayName: `${prefix}${index}`,
+      name: `${prefix}${index}`,
+      description: `${prefix}-description`,
+    }));
+  };
+
+  it("should show all data with postProcessCallback filtering", async () => {
+    const pageSize = 3;
+    const firstPageIModels = generateMockIModels(3, "iModel");
+    firstPageIModels[1].description = "unmatched";
+    firstPageIModels[2].description = "unmatched";
+
+    const secondPageIModels = generateMockIModels(3, "iModel");
+    secondPageIModels[1].description = "unmatched";
+    secondPageIModels[2].description = "unmatched";
+
+    const thirdPageIModels = generateMockIModels(3, "iModel");
+
+    const mockFetchMore = jest.fn();
+
+    const useIModelDataMock = jest.spyOn(useIModelData, "useIModelData");
+
+    useIModelDataMock.mockReturnValue({
+      iModels: firstPageIModels,
+      status: DataStatus.Complete,
+      fetchMore: mockFetchMore,
+      refetchIModels: jest.fn(),
+    });
+
+    const postProcessCallback = jest
+      .fn()
+      .mockImplementation((iModels: IModelFull[]) => {
+        return iModels.filter(
+          (iModel) => iModel.description === "iModel-description"
+        );
+      });
+
+    const { rerender } = render(
+      <IModelGrid
+        viewMode="cells"
+        pageSize={pageSize}
+        postProcessCallback={postProcessCallback}
+      />
+    );
+
+    await waitFor(() => {
+      expect(mockFetchMore).toHaveBeenCalled();
+    });
+
+    useIModelDataMock.mockReturnValue({
+      iModels: [...firstPageIModels, ...secondPageIModels],
+      status: DataStatus.Complete,
+      fetchMore: mockFetchMore,
+      refetchIModels: jest.fn(),
+    });
+
+    mockFetchMore.mockClear();
+    postProcessCallback.mockImplementation((iModels: IModelFull[]) => {
+      return iModels.filter(
+        (iModel) => iModel.description === "iModel-description"
+      );
+    });
+
+    rerender(
+      <IModelGrid
+        viewMode="cells"
+        pageSize={pageSize}
+        postProcessCallback={postProcessCallback}
+      />
+    );
+
+    expect(postProcessCallback).toHaveBeenCalledWith(
+      [...firstPageIModels, ...secondPageIModels],
+      DataStatus.Complete,
+      undefined
+    );
+
+    await waitFor(() => {
+      expect(mockFetchMore).toHaveBeenCalled();
+    });
+
+    useIModelDataMock.mockReturnValue({
+      iModels: [...firstPageIModels, ...secondPageIModels, ...thirdPageIModels],
+      status: DataStatus.Complete,
+      fetchMore: mockFetchMore,
+      refetchIModels: jest.fn(),
+    });
+
+    mockFetchMore.mockClear();
+
+    postProcessCallback.mockImplementation((iModels: IModelFull[]) => {
+      return iModels.filter(
+        (iModel) => iModel.description === "iModel-description"
+      );
+    });
+
+    rerender(
+      <IModelGrid
+        viewMode="cells"
+        pageSize={pageSize}
+        postProcessCallback={postProcessCallback}
+      />
+    );
+
+    expect(postProcessCallback).toHaveBeenCalledWith(
+      [...firstPageIModels, ...secondPageIModels, ...thirdPageIModels],
+      DataStatus.Complete,
+      undefined
+    );
+
+    expect(mockFetchMore).not.toHaveBeenCalled();
+  });
 });
diff --git a/packages/modules/imodel-browser/src/containers/iModelGrid/IModelGrid.tsx b/packages/modules/imodel-browser/src/containers/iModelGrid/IModelGrid.tsx
index 657c6951..b7832ad4 100644
--- a/packages/modules/imodel-browser/src/containers/iModelGrid/IModelGrid.tsx
+++ b/packages/modules/imodel-browser/src/containers/iModelGrid/IModelGrid.tsx
@@ -20,7 +20,7 @@ import { _mergeStrings } from "../../utils/_apiOverrides";
 import { ContextMenuBuilderItem } from "../../utils/_buildMenuOptions";
 import { IModelGhostTile } from "../iModelTiles/IModelGhostTile";
 import { IModelTile, IModelTileProps } from "../iModelTiles/IModelTile";
-import { useIModelData } from "./useIModelData";
+import { DEFAULT_PAGE_SIZE, useIModelData } from "./useIModelData";
 import { useIModelTableConfig } from "./useIModelTableConfig";
 export interface IModelGridProps {
   /**
@@ -173,6 +173,16 @@ export const IModelGrid = ({
     [postProcessCallback, fetchediModels, fetchStatus, searchText]
   );
 
+  React.useEffect(() => {
+    if (
+      iModels.length < (pageSize ?? DEFAULT_PAGE_SIZE) &&
+      fetchMore &&
+      fetchStatus !== DataStatus.Fetching
+    ) {
+      fetchMore();
+    }
+  }, [iModels.length, pageSize, fetchMore, fetchStatus]);
+
   const { columns, onRowClick } = useIModelTableConfig({
     iModelActions,
     onThumbnailClick,
diff --git a/packages/modules/imodel-browser/src/containers/iModelGrid/useIModelData.ts b/packages/modules/imodel-browser/src/containers/iModelGrid/useIModelData.ts
index d2610255..82cbc23d 100644
--- a/packages/modules/imodel-browser/src/containers/iModelGrid/useIModelData.ts
+++ b/packages/modules/imodel-browser/src/containers/iModelGrid/useIModelData.ts
@@ -25,7 +25,7 @@ export interface IModelDataHookOptions {
   /** @deprecated in 2.1 It is no longer used as it has no effect on the data fetching. */
   viewMode?: ViewType;
 }
-const DEFAULT_PAGE_SIZE = 100;
+export const DEFAULT_PAGE_SIZE = 100;
 
 export const useIModelData = ({
   iTwinId,