diff --git a/companion/extension/entrypoints/background/index.ts b/companion/extension/entrypoints/background/index.ts
index 08b342c497..203a6a445e 100644
--- a/companion/extension/entrypoints/background/index.ts
+++ b/companion/extension/entrypoints/background/index.ts
@@ -947,11 +947,16 @@ async function fetchEventTypes(): Promise<unknown[]> {
 
   const userData = await userResponse.json();
   const username = userData?.data?.username as string | undefined;
+  // For org users, include org slug to avoid username collisions across orgs
+  const orgSlug = userData?.data?.organization?.slug as string | undefined;
 
   const params = new URLSearchParams();
   if (username) {
     params.append("username", username);
   }
+  if (orgSlug) {
+    params.append("orgSlug", orgSlug);
+  }
   const queryString = params.toString();
   const endpoint = `${API_BASE_URL}/event-types${queryString ? `?${queryString}` : ""}`;
 
diff --git a/companion/services/calcom.ts b/companion/services/calcom.ts
index 21f5230df4..be26d6e458 100644
--- a/companion/services/calcom.ts
+++ b/companion/services/calcom.ts
@@ -862,21 +862,29 @@ async function getTranscripts(bookingUid: string): Promise<BookingTranscript[]>
 }
 
 async function getEventTypes(): Promise<EventType[]> {
-  // Get cached user profile to extract username (uses in-flight deduplication)
+  // Get cached user profile to extract username and org slug (uses in-flight deduplication)
   let username: string | undefined;
+  let orgSlug: string | undefined;
   try {
     const userProfile = await getUserProfile();
     // Extract username from response
     if (userProfile?.username) {
       username = userProfile.username;
     }
+    // For org users, include org slug to avoid username collisions across orgs
+    if (userProfile?.organization?.slug) {
+      orgSlug = userProfile.organization.slug;
+    }
   } catch (_error) {}
 
-  // Build query string with username and sorting
+  // Build query string with username, orgSlug, and sorting
   const params = new URLSearchParams();
   if (username) {
     params.append("username", username);
   }
+  if (orgSlug) {
+    params.append("orgSlug", orgSlug);
+  }
   // Sort by creation date descending (newer first) to match main codebase behavior
   // Main codebase uses position: "desc", id: "desc" - since API doesn't expose position,
   // we use sortCreatedAt: "desc" for similar behavior (newer event types first)
diff --git a/companion/services/types/users.types.ts b/companion/services/types/users.types.ts
index 7d3b40f706..0f942f084d 100644
--- a/companion/services/types/users.types.ts
+++ b/companion/services/types/users.types.ts
@@ -13,6 +13,8 @@ export interface UserProfile {
   organizationId?: number;
   organization?: {
     id: number;
+    slug?: string;
+    name?: string;
     isPlatform: boolean;
   };
   metadata?: Record<string, unknown>;