diff --git a/packages/next/src/build/webpack/plugins/flight-types-plugin.ts b/packages/next/src/build/webpack/plugins/flight-types-plugin.ts
index 50ba0bb8dcc66..c530248ac0260 100644
--- a/packages/next/src/build/webpack/plugins/flight-types-plugin.ts
+++ b/packages/next/src/build/webpack/plugins/flight-types-plugin.ts
@@ -66,7 +66,7 @@ interface IEntry {
       : ''
   }
   metadata?: any
-  generateMetadata?: (props: PageProps, parent: ResolvingMetadata) => Promise<any>
+  generateMetadata?: (props: PageProps, parent: ResolvingMetadata) => any | Promise<any>
 }
 
 // =============
diff --git a/packages/next/src/lib/metadata/resolve-metadata.ts b/packages/next/src/lib/metadata/resolve-metadata.ts
index 0f74d9696f164..734f5d91819d1 100644
--- a/packages/next/src/lib/metadata/resolve-metadata.ts
+++ b/packages/next/src/lib/metadata/resolve-metadata.ts
@@ -328,7 +328,9 @@ function merge(
   }
 }
 
-type MetadataResolver = (_parent: ResolvingMetadata) => Promise<Metadata>
+type MetadataResolver = (
+  _parent: ResolvingMetadata
+) => Metadata | Promise<Metadata>
 export type MetadataItems = [
   Metadata | MetadataResolver | null,
   Metadata | null
@@ -410,10 +412,11 @@ export async function accumulateMetadata(
 
   for (const item of metadataItems) {
     const [metadataExport, staticFilesMetadata] = item
-    const layerMetadataPromise =
+    const layerMetadataPromise = Promise.resolve(
       typeof metadataExport === 'function'
         ? metadataExport(parentPromise)
-        : Promise.resolve(metadataExport)
+        : metadataExport
+    )
 
     parentPromise = parentPromise.then((resolved) => {
       return layerMetadataPromise.then((exportedMetadata) => {
diff --git a/test/e2e/app-dir/metadata/app/basic/sync-generate-metadata/page.tsx b/test/e2e/app-dir/metadata/app/basic/sync-generate-metadata/page.tsx
new file mode 100644
index 0000000000000..6d6d370de9a38
--- /dev/null
+++ b/test/e2e/app-dir/metadata/app/basic/sync-generate-metadata/page.tsx
@@ -0,0 +1,9 @@
+export default function Page() {
+  return 'synchronous generateMetadata'
+}
+
+export function generateMetadata() {
+  return {
+    title: 'synchronous generateMetadata',
+  }
+}
diff --git a/test/e2e/app-dir/metadata/metadata.test.ts b/test/e2e/app-dir/metadata/metadata.test.ts
index c65bf01058947..ade1390693023 100644
--- a/test/e2e/app-dir/metadata/metadata.test.ts
+++ b/test/e2e/app-dir/metadata/metadata.test.ts
@@ -316,6 +316,11 @@ createNextDescribe(
           /params - blog query - xxx/
         )
       })
+
+      it('should support synchronous generateMetadata export', async () => {
+        const browser = await next.browser('/basic/sync-generate-metadata')
+        expect(await getTitle(browser)).toBe('synchronous generateMetadata')
+      })
     })
 
     describe('opengraph', () => {