diff --git a/src/VCS/Adapter.php b/src/VCS/Adapter.php
index 27478a95..6986178d 100644
--- a/src/VCS/Adapter.php
+++ b/src/VCS/Adapter.php
@@ -80,9 +80,14 @@ abstract public function getUser(string $username): array;
     /**
      * Get owner name of the installation
      *
-     * @return string
+     * For GitHub: Uses installationId to identify the GitHub App installation
+     * For Gitea: Requires repositoryId since OAuth tokens can access multiple organizations
+     *
+     * @param string $installationId Installation ID (GitHub) or empty string (Gitea)
+     * @param int|null $repositoryId Repository ID (required for Gitea, ignored by GitHub)
+     * @return string Owner login/username
      */
-    abstract public function getOwnerName(string $installationId): string;
+    abstract public function getOwnerName(string $installationId, ?int $repositoryId = null): string;
 
     /**
      * Search repositories for GitHub App
diff --git a/src/VCS/Adapter/Git/GitHub.php b/src/VCS/Adapter/Git/GitHub.php
index b57290d1..958cac09 100644
--- a/src/VCS/Adapter/Git/GitHub.php
+++ b/src/VCS/Adapter/Git/GitHub.php
@@ -618,10 +618,13 @@ public function getUser(string $username): array
     /**
      * Get owner name of the GitHub installation
      *
-     * @return string
+     * @param string $installationId GitHub App installation ID
+     * @param int|null $repositoryId Not used by GitHub (parameter exists for Gitea compatibility)
+     * @return string Owner login/username
      */
-    public function getOwnerName(string $installationId): string
+    public function getOwnerName(string $installationId, ?int $repositoryId = null): string
     {
+        // GitHub doesn't use $repositoryId - only installationId
         $url = '/app/installations/' . $installationId;
         $response = $this->call(self::METHOD_GET, $url, ['Authorization' => "Bearer $this->jwtToken"]);
 
diff --git a/src/VCS/Adapter/Git/Gitea.php b/src/VCS/Adapter/Git/Gitea.php
index c7c3fd10..aedf6c7e 100644
--- a/src/VCS/Adapter/Git/Gitea.php
+++ b/src/VCS/Adapter/Git/Gitea.php
@@ -531,9 +531,35 @@ public function getUser(string $username): array
         throw new Exception("Not implemented yet");
     }
 
-    public function getOwnerName(string $installationId): string
+    public function getOwnerName(string $installationId, ?int $repositoryId = null): string
     {
-        throw new Exception("getOwnerName() is not applicable for Gitea");
+        if ($repositoryId === null || $repositoryId <= 0) {
+            throw new Exception("repositoryId is required for Gitea");
+        }
+
+        $url = "/repositories/{$repositoryId}";
+
+        $response = $this->call(self::METHOD_GET, $url, ['Authorization' => "token $this->accessToken"]);
+
+        $responseHeaders = $response['headers'] ?? [];
+        $responseHeadersStatusCode = $responseHeaders['status-code'] ?? 0;
+
+        if ($responseHeadersStatusCode === 404) {
+            throw new RepositoryNotFound("Repository not found");
+        }
+
+        if ($responseHeadersStatusCode >= 400) {
+            throw new Exception("Failed to get repository: HTTP {$responseHeadersStatusCode}");
+        }
+
+        $responseBody = $response['body'] ?? [];
+        $owner = $responseBody['owner'] ?? [];
+
+        if (empty($owner['login'])) {
+            throw new Exception("Owner login missing or empty in response");
+        }
+
+        return $owner['login'];
     }
 
     public function getPullRequest(string $owner, string $repositoryName, int $pullRequestNumber): array
diff --git a/tests/VCS/Adapter/GiteaTest.php b/tests/VCS/Adapter/GiteaTest.php
index 4405bab3..bed2ff4c 100644
--- a/tests/VCS/Adapter/GiteaTest.php
+++ b/tests/VCS/Adapter/GiteaTest.php
@@ -721,19 +721,53 @@ public function testDeleteNonExistingRepositoryFails(): void
     }
 
     public function testGetOwnerName(): void
+    {
+        $repositoryName = 'test-get-owner-name-' . \uniqid();
+        $created = $this->vcsAdapter->createRepository(self::$owner, $repositoryName, false);
+
+        try {
+            $this->assertIsArray($created);
+            $this->assertArrayHasKey('id', $created);
+            $this->assertIsScalar($created['id']);
+            $repositoryId = (int) $created['id'];
+
+            $ownerName = $this->vcsAdapter->getOwnerName('', $repositoryId);
+
+            $this->assertSame(self::$owner, $ownerName);
+        } finally {
+            $this->vcsAdapter->deleteRepository(self::$owner, $repositoryName);
+        }
+    }
+
+    public function testGetOwnerNameWithZeroRepositoryId(): void
+    {
+        $this->expectException(\Exception::class);
+        $this->expectExceptionMessage('repositoryId is required for Gitea');
+
+        $this->vcsAdapter->getOwnerName('', 0);
+    }
+
+    public function testGetOwnerNameWithoutRepositoryId(): void
     {
         $this->expectException(\Exception::class);
-        $this->expectExceptionMessage('not applicable for Gitea');
+        $this->expectExceptionMessage('repositoryId is required for Gitea');
 
         $this->vcsAdapter->getOwnerName('');
     }
 
-    public function testGetOwnerNameWithRandomInput(): void
+    public function testGetOwnerNameWithInvalidRepositoryId(): void
+    {
+        $this->expectException(\Utopia\VCS\Exception\RepositoryNotFound::class);
+
+        $this->vcsAdapter->getOwnerName('', 999999999);
+    }
+
+    public function testGetOwnerNameWithNullRepositoryId(): void
     {
         $this->expectException(\Exception::class);
-        $this->expectExceptionMessage('not applicable for Gitea');
+        $this->expectExceptionMessage('repositoryId is required for Gitea');
 
-        $this->vcsAdapter->getOwnerName('random-gibberish-' . \uniqid());
+        $this->vcsAdapter->getOwnerName('', null);
     }
 
     public function testGetPullRequestFromBranch(): void