diff --git a/docs/en/index.rst b/docs/en/index.rst
index 251e9503..7d35850d 100644
--- a/docs/en/index.rst
+++ b/docs/en/index.rst
@@ -229,6 +229,18 @@ Applies the given function to each element in the collection and returns a new c
         return $value + 1;
     }); // [2, 3, 4]
 
+reduce
+------
+
+Applies iteratively the given function to each element in the collection, so as to reduce the collection to a single value.
+
+.. code-block:: php
+    $collection = new ArrayCollection([1, 2, 3]);
+
+    $reduce = $collection->reduce(function(int $accumulator, int $value): int {
+        return $accumulator + $value;
+    }, 0); // 6
+
 next
 ----
 
diff --git a/lib/Doctrine/Common/Collections/AbstractLazyCollection.php b/lib/Doctrine/Common/Collections/AbstractLazyCollection.php
index dae801cc..03c48dff 100644
--- a/lib/Doctrine/Common/Collections/AbstractLazyCollection.php
+++ b/lib/Doctrine/Common/Collections/AbstractLazyCollection.php
@@ -244,6 +244,16 @@ public function map(Closure $func): Collection
         return $this->collection->map($func);
     }
 
+    /**
+     * {@inheritDoc}
+     */
+    public function reduce(Closure $func, $initial = null)
+    {
+        $this->initialize();
+
+        return $this->collection->reduce($func, $initial);
+    }
+
     /**
      * {@inheritDoc}
      */
diff --git a/lib/Doctrine/Common/Collections/ArrayCollection.php b/lib/Doctrine/Common/Collections/ArrayCollection.php
index f507e296..1049291b 100644
--- a/lib/Doctrine/Common/Collections/ArrayCollection.php
+++ b/lib/Doctrine/Common/Collections/ArrayCollection.php
@@ -13,6 +13,7 @@
 use function array_key_exists;
 use function array_keys;
 use function array_map;
+use function array_reduce;
 use function array_reverse;
 use function array_search;
 use function array_slice;
@@ -349,6 +350,14 @@ public function map(Closure $func): Collection
         return $this->createFrom(array_map($func, $this->elements));
     }
 
+    /**
+     * {@inheritDoc}
+     */
+    public function reduce(Closure $func, $initial = null)
+    {
+        return array_reduce($this->elements, $func, $initial);
+    }
+
     /**
      * {@inheritDoc}
      *
diff --git a/lib/Doctrine/Common/Collections/Collection.php b/lib/Doctrine/Common/Collections/Collection.php
index c0a5e2cf..1390402e 100644
--- a/lib/Doctrine/Common/Collections/Collection.php
+++ b/lib/Doctrine/Common/Collections/Collection.php
@@ -261,6 +261,22 @@ public function forAll(Closure $p): bool;
      */
     public function map(Closure $func): self;
 
+    /**
+     * Applies iteratively the given function to each element in the collection,
+     * so as to reduce the collection to a single value.
+     *
+     * @param mixed $initial
+     *
+     * @return mixed
+     *
+     * @psalm-template TReturn
+     * @psalm-template TInitial
+     * @psalm-param Closure(TReturn|TInitial, T):TReturn $func
+     * @psalm-param TInitial|null $initial
+     * @psalm-return TReturn|TInitial|null
+     */
+    public function reduce(Closure $func, $initial = null);
+
     /**
      * Partitions this collection in two collections according to a predicate.
      * Keys are preserved in the resulting collections.
diff --git a/tests/Doctrine/Tests/Common/Collections/BaseCollectionTest.php b/tests/Doctrine/Tests/Common/Collections/BaseCollectionTest.php
index 63e02211..1eef01ab 100644
--- a/tests/Doctrine/Tests/Common/Collections/BaseCollectionTest.php
+++ b/tests/Doctrine/Tests/Common/Collections/BaseCollectionTest.php
@@ -76,6 +76,19 @@ public function testMap(): void
         self::assertEquals([2, 4], $res->toArray());
     }
 
+    public function testReduce(): void
+    {
+        $this->collection->add(1);
+        $this->collection->add(2);
+        $this->collection->add(3);
+        $this->collection->add(4);
+
+        $res = $this->collection->reduce(static function ($sum, $e) {
+            return $sum + $e;
+        });
+        self::assertSame(10, $res);
+    }
+
     public function testFilter(): void
     {
         $this->collection->add(1);