diff --git a/.github/workflows/integration.yml b/.github/workflows/integration.yml
index 346a57f2e..06827f277 100644
--- a/.github/workflows/integration.yml
+++ b/.github/workflows/integration.yml
@@ -167,7 +167,7 @@ jobs:
             exit 1
           fi
           echo "- Validating user-agent set to an empty string"
-          expected="octokit-core.js/"
+          expected="actions/github-script octokit-core.js/"
           if [[ "${{steps.user-agent-empty.outputs.result}}" != "$expected"* ]]; then
             echo $'::error::\u274C' "Expected user-agent to start with '$expected', got ${{steps.user-agent-empty.outputs.result}}"
             exit 1
diff --git a/dist/index.js b/dist/index.js
index bb06b77b9..19ad994c3 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -36267,9 +36267,11 @@ async function main() {
     const retries = parseInt(core.getInput('retries'));
     const exemptStatusCodes = parseNumberArray(core.getInput('retry-exempt-status-codes'));
     const [retryOpts, requestOpts] = getRetryOptions(retries, exemptStatusCodes, utils.defaults);
+    const baseUserAgent = userAgent || 'actions/github-script';
+    const finalUserAgent = getUserAgentWithOrchestrationId(baseUserAgent);
     const opts = {
         log: debug ? console : undefined,
-        userAgent: userAgent || undefined,
+        userAgent: finalUserAgent,
         previews: previews ? previews.split(',') : undefined,
         retry: retryOpts,
         request: requestOpts
@@ -36313,6 +36315,20 @@ function handleError(err) {
     console.error(err);
     core.setFailed(`Unhandled error: ${err}`);
 }
+/**
+ * Gets the user agent string with orchestration ID appended if available
+ * @param userAgent The base user agent string
+ * @returns The user agent string with orchestration ID appended if ACTIONS_ORCHESTRATION_ID is set
+ */
+function getUserAgentWithOrchestrationId(userAgent) {
+    const orchestrationId = process.env['ACTIONS_ORCHESTRATION_ID'];
+    if (!orchestrationId) {
+        return userAgent;
+    }
+    // Sanitize orchestration ID - replace invalid characters with underscore
+    const sanitized = orchestrationId.replace(/[^a-zA-Z0-9._-]/g, '_');
+    return `${userAgent} actions_orchestration_id/${sanitized}`;
+}
 
 })();
 
diff --git a/src/main.ts b/src/main.ts
index baa2933dc..cbf65693c 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -39,9 +39,12 @@ async function main(): Promise<void> {
     defaultGitHubOptions
   )
 
+  const baseUserAgent = userAgent || 'actions/github-script'
+  const finalUserAgent = getUserAgentWithOrchestrationId(baseUserAgent)
+
   const opts: Options = {
     log: debug ? console : undefined,
-    userAgent: userAgent || undefined,
+    userAgent: finalUserAgent,
     previews: previews ? previews.split(',') : undefined,
     retry: retryOpts,
     request: requestOpts
@@ -96,3 +99,20 @@ function handleError(err: any): void {
   console.error(err)
   core.setFailed(`Unhandled error: ${err}`)
 }
+
+/**
+ * Gets the user agent string with orchestration ID appended if available
+ * @param userAgent The base user agent string
+ * @returns The user agent string with orchestration ID appended if ACTIONS_ORCHESTRATION_ID is set
+ */
+function getUserAgentWithOrchestrationId(userAgent: string): string {
+  const orchestrationId = process.env['ACTIONS_ORCHESTRATION_ID']
+  if (!orchestrationId) {
+    return userAgent
+  }
+
+  // Sanitize orchestration ID - replace invalid characters with underscore
+  const sanitized = orchestrationId.replace(/[^a-zA-Z0-9._-]/g, '_')
+
+  return `${userAgent} actions_orchestration_id/${sanitized}`
+}