diff --git a/.changeset/ignore-generated-manifest.md b/.changeset/ignore-generated-manifest.md
new file mode 100644
index 0000000000..d00263a47d
--- /dev/null
+++ b/.changeset/ignore-generated-manifest.md
@@ -0,0 +1,7 @@
+---
+"@workflow/builders": patch
+"@workflow/next": patch
+"@workflow/sveltekit": patch
+---
+
+Write colocated `.gitignore` files for public workflow manifests generated by `WORKFLOW_PUBLIC_MANIFEST=1`
diff --git a/packages/builders/src/vercel-build-output-api.ts b/packages/builders/src/vercel-build-output-api.ts
index 81ab83342f..f5638881fc 100644
--- a/packages/builders/src/vercel-build-output-api.ts
+++ b/packages/builders/src/vercel-build-output-api.ts
@@ -50,6 +50,7 @@ export class VercelBuildOutputAPIBuilder extends BaseBuilder {
         'static/.well-known/workflow/v1'
       );
       await mkdir(staticManifestDir, { recursive: true });
+      await writeFile(join(staticManifestDir, '.gitignore'), '*');
       await copyFile(
         join(workflowGeneratedDir, 'manifest.json'),
         join(staticManifestDir, 'manifest.json')
diff --git a/packages/next/src/builder-deferred.ts b/packages/next/src/builder-deferred.ts
index cb918cf0c2..ee4ee5bed1 100644
--- a/packages/next/src/builder-deferred.ts
+++ b/packages/next/src/builder-deferred.ts
@@ -640,6 +640,10 @@ export async function getNextBuilderDeferred() {
           'public/.well-known/workflow/v1'
         );
         await mkdir(publicManifestDir, { recursive: true });
+        await this.writeFileIfChanged(
+          join(publicManifestDir, '.gitignore'),
+          '*'
+        );
         await this.copyFileIfChanged(
           manifestFilePath,
           join(publicManifestDir, 'manifest.json')
diff --git a/packages/next/src/builder-eager.ts b/packages/next/src/builder-eager.ts
index c6d6fac0e2..944ac84739 100644
--- a/packages/next/src/builder-eager.ts
+++ b/packages/next/src/builder-eager.ts
@@ -76,6 +76,7 @@ export async function getNextBuilderEager() {
           'public/.well-known/workflow/v1'
         );
         await mkdir(publicManifestDir, { recursive: true });
+        await writeFile(join(publicManifestDir, '.gitignore'), '*');
         await copyFile(
           join(workflowGeneratedDir, 'manifest.json'),
           join(publicManifestDir, 'manifest.json')
diff --git a/packages/sveltekit/src/builder.ts b/packages/sveltekit/src/builder.ts
index 3a0a988af6..0a10277c74 100644
--- a/packages/sveltekit/src/builder.ts
+++ b/packages/sveltekit/src/builder.ts
@@ -88,6 +88,7 @@ export class SvelteKitBuilder extends BaseBuilder {
         'static/.well-known/workflow/v1'
       );
       await mkdir(staticManifestDir, { recursive: true });
+      await writeFile(join(staticManifestDir, '.gitignore'), '*');
       await copyFile(
         join(workflowGeneratedDir, 'manifest.json'),
         join(staticManifestDir, 'manifest.json')
diff --git a/workbench/example/.gitignore b/workbench/example/.gitignore
index 821a5ee075..2cc3c7bc8d 100644
--- a/workbench/example/.gitignore
+++ b/workbench/example/.gitignore
@@ -1 +1 @@
-manifest.js
\ No newline at end of file
+manifest.js