diff --git a/src/VCS/Adapter/Git/Bitbucket.php b/src/VCS/Adapter/Git/Bitbucket.php
index 95f2eff8..938a741e 100644
--- a/src/VCS/Adapter/Git/Bitbucket.php
+++ b/src/VCS/Adapter/Git/Bitbucket.php
@@ -256,15 +256,26 @@ private function normalizeRepository(array $repository): array
         return $repository;
     }
 
-    public function createRepository(string $owner, string $repositoryName, bool $private): array
+    /**
+     * Bitbucket alone groups repositories under a project, so the argument
+     * stays optional and off the shared three-argument contract.
+     *
+     * @return array<mixed> Details of new repository
+     */
+    public function createRepository(string $owner, string $repositoryName, bool $private, string $project = ''): array
     {
         $url = "/repositories/{$owner}/{$repositoryName}";
-
-        $response = $this->call(self::METHOD_POST, $url, ['Authorization' => $this->authorizationHeader()], [
+        $payload = [
             'scm' => 'git',
             'name' => $repositoryName,
             'is_private' => $private,
-        ]);
+        ];
+
+        if ($project !== '') {
+            $payload['project'] = ['key' => $project];
+        }
+
+        $response = $this->call(self::METHOD_POST, $url, ['Authorization' => $this->authorizationHeader()], $payload);
 
         $responseHeaders = $response['headers'] ?? [];
         $statusCode = $responseHeaders['status-code'] ?? 0;
diff --git a/tests/VCS/Adapter/BitbucketTest.php b/tests/VCS/Adapter/BitbucketTest.php
index 3bb9cffb..b3233a02 100644
--- a/tests/VCS/Adapter/BitbucketTest.php
+++ b/tests/VCS/Adapter/BitbucketTest.php
@@ -6,6 +6,7 @@
 use Utopia\Cache\Cache;
 use Utopia\System\System;
 use Utopia\Tests\Base;
+use Exception;
 use Utopia\VCS\Adapter\Git\Bitbucket;
 
 class BitbucketTest extends Base
@@ -45,6 +46,10 @@ class BitbucketTest extends Base
     // Bitbucket Cloud can't reach a local test catcher
     protected static bool $supportsWebhookDelivery = false;
 
+    // Projects are Bitbucket's alone, so they are reached off the adapter
+    // itself rather than through the shared contract
+    private Bitbucket $bitbucket;
+
     protected function signWebhookPayload(string $payload, string $secret): string
     {
         return 'sha256=' . hash_hmac('sha256', $payload, $secret);
@@ -75,6 +80,7 @@ protected function setupAdapter(): void
         }
 
         $this->vcsAdapter = $adapter;
+        $this->bitbucket = $adapter;
     }
 
     /**
@@ -171,10 +177,50 @@ private function eventActor(): array
         ];
     }
 
-    /**
-     * Bitbucket only names the author in a raw "Name <email>" string; a commit
-     * linked to an account is named by the account instead.
-     */
+    public function testCreateRepositoryProject(): void
+    {
+        // Naming no project files the repository under the workspace default,
+        // which is also the only place an existing key can be read from
+        $withoutProject = 'test-create-repository-no-project-' . \uniqid();
+        $repository = $this->bitbucket->createRepository(static::$owner, $withoutProject, false);
+
+        try {
+            $this->assertSame($withoutProject, $repository['name']);
+            $this->assertArrayHasKey('project', $repository);
+            $this->assertIsArray($repository['project']);
+            $this->assertArrayHasKey('key', $repository['project']);
+            $this->assertIsString($repository['project']['key']);
+            $projectKey = $repository['project']['key'];
+        } finally {
+            $this->discardRepositories($withoutProject);
+        }
+
+        $inProject = 'test-create-repository-project-' . \uniqid();
+        $repository = $this->bitbucket->createRepository(static::$owner, $inProject, false, $projectKey);
+
+        try {
+            $this->assertSame($inProject, $repository['name']);
+            $this->assertArrayHasKey('project', $repository);
+            $this->assertIsArray($repository['project']);
+            $this->assertArrayHasKey('key', $repository['project']);
+            $this->assertSame($projectKey, $repository['project']['key']);
+        } finally {
+            $this->discardRepositories($inProject);
+        }
+    }
+
+    public function testCreateRepositoryInAnUnknownProjectFails(): void
+    {
+        $this->expectException(Exception::class);
+
+        $this->bitbucket->createRepository(
+            static::$owner,
+            'test-create-repository-unknown-project-' . \uniqid(),
+            false,
+            'NOSUCHPROJECTKEY'
+        );
+    }
+
     public function testGetEventPushWithLinkedAuthor(): void
     {
         $payload = json_decode($this->pushPayload(static::$defaultBranch), true);