diff --git a/src/Tools/Console/Command/MappingDescribeCommand.php b/src/Tools/Console/Command/MappingDescribeCommand.php
index bba382ad8da..f37639889ce 100644
--- a/src/Tools/Console/Command/MappingDescribeCommand.php
+++ b/src/Tools/Console/Command/MappingDescribeCommand.php
@@ -10,6 +10,8 @@
 use Doctrine\ORM\Mapping\FieldMapping;
 use Doctrine\Persistence\Mapping\MappingException;
 use InvalidArgumentException;
+use Symfony\Component\Console\Completion\CompletionInput;
+use Symfony\Component\Console\Completion\CompletionSuggestions;
 use Symfony\Component\Console\Input\InputArgument;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Input\InputOption;
@@ -19,6 +21,7 @@
 use function array_filter;
 use function array_map;
 use function array_merge;
+use function array_values;
 use function count;
 use function current;
 use function get_debug_type;
@@ -32,6 +35,7 @@
 use function preg_quote;
 use function print_r;
 use function sprintf;
+use function str_replace;
 
 use const JSON_PRETTY_PRINT;
 use const JSON_THROW_ON_ERROR;
@@ -73,6 +77,20 @@ protected function execute(InputInterface $input, OutputInterface $output): int
         return 0;
     }
 
+    public function complete(CompletionInput $input, CompletionSuggestions $suggestions): void
+    {
+        if ($input->mustSuggestArgumentValuesFor('entityName')) {
+            $entityManager = $this->getEntityManager($input);
+
+            $entities = array_map(
+                static fn (string $fqcn) => str_replace('\\', '\\\\', $fqcn),
+                $this->getMappedEntities($entityManager),
+            );
+
+            $suggestions->suggestValues(array_values($entities));
+        }
+    }
+
     /**
      * Display all the mapping information for a single Entity.
      *
diff --git a/tests/Tests/ORM/Tools/Console/Command/MappingDescribeCommandTest.php b/tests/Tests/ORM/Tools/Console/Command/MappingDescribeCommandTest.php
index 30a1e43b90d..124874e0106 100644
--- a/tests/Tests/ORM/Tools/Console/Command/MappingDescribeCommandTest.php
+++ b/tests/Tests/ORM/Tools/Console/Command/MappingDescribeCommandTest.php
@@ -11,7 +11,9 @@
 use Doctrine\Tests\OrmFunctionalTestCase;
 use InvalidArgumentException;
 use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\Attributes\DataProvider;
 use Symfony\Component\Console\Application;
+use Symfony\Component\Console\Tester\CommandCompletionTester;
 use Symfony\Component\Console\Tester\CommandTester;
 
 /**
@@ -77,4 +79,37 @@ public function testShowSpecificNotFound(): void
             ],
         );
     }
+
+    /**
+     * @param string[] $input
+     * @param string[] $expectedSuggestions
+     */
+    #[DataProvider('provideCompletionSuggestions')]
+    public function testComplete(array $input, array $expectedSuggestions): void
+    {
+        $this->useModelSet('cache');
+
+        parent::setUp();
+
+        $completionTester = new CommandCompletionTester(new MappingDescribeCommand(new SingleManagerProvider($this->_em)));
+
+        $suggestions = $completionTester->complete($input);
+
+        foreach ($expectedSuggestions as $expected) {
+            self::assertContains($expected, $suggestions);
+        }
+    }
+
+    /** @return iterable<string, array{string[], string[]}> */
+    public static function provideCompletionSuggestions(): iterable
+    {
+        yield 'entityName' => [
+            [''],
+            [
+                'Doctrine\\\\Tests\\\\Models\\\\Cache\\\\Restaurant',
+                'Doctrine\\\\Tests\\\\Models\\\\Cache\\\\Beach',
+                'Doctrine\\\\Tests\\\\Models\\\\Cache\\\\Bar',
+            ],
+        ];
+    }
 }