diff --git a/.changeset/funny-lamps-work.md b/.changeset/funny-lamps-work.md
new file mode 100644
index 00000000000..33037da3041
--- /dev/null
+++ b/.changeset/funny-lamps-work.md
@@ -0,0 +1,7 @@
+---
+'@clerk/backend': minor
+---
+
+- Added the `User.last_active_at` timestamp field which stores the latest date of session activity, with day precision. For further details, please consult the [Backend API documentation](https://clerk.com/docs/reference/backend-api/tag/Users#operation/GetUser).
+- Added the `last_active_at_since` filtering parameter for the Users listing request. The new parameter can be used to retrieve users that have displayed session activity since the given date. For further details, please consult the [Backend API documentation](https://clerk.com/docs/reference/backend-api/tag/Users#operation/GetUserList).
+- Added the `last_active_at` available options for the `orderBy` parameter of the Users listing request. For further details, please consult the [Backend API documentation](https://clerk.com/docs/reference/backend-api/tag/Users#operation/GetUserList).
diff --git a/packages/backend/src/api/endpoints/UserApi.ts b/packages/backend/src/api/endpoints/UserApi.ts
index d8295f14359..e069af0c6e3 100644
--- a/packages/backend/src/api/endpoints/UserApi.ts
+++ b/packages/backend/src/api/endpoints/UserApi.ts
@@ -15,11 +15,22 @@ type UserCountParams = {
   query?: string;
   userId?: string[];
   externalId?: string[];
+  last_active_at_since?: number;
 };
 
 type UserListParams = ClerkPaginationRequest<
   UserCountParams & {
-    orderBy?: 'created_at' | 'updated_at' | '+created_at' | '+updated_at' | '-created_at' | '-updated_at';
+    orderBy?:
+      | 'created_at'
+      | 'updated_at'
+      | '+created_at'
+      | '+updated_at'
+      | '-created_at'
+      | '-updated_at'
+      | '+last_sign_in_at'
+      | '+last_active_at'
+      | '-last_sign_in_at'
+      | '-last_active_at';
   }
 >;
 
diff --git a/packages/backend/src/api/resources/JSON.ts b/packages/backend/src/api/resources/JSON.ts
index 3e7a0647abf..80dde62e267 100644
--- a/packages/backend/src/api/resources/JSON.ts
+++ b/packages/backend/src/api/resources/JSON.ts
@@ -271,6 +271,7 @@ export interface UserJSON extends ClerkResourceJSON {
   unsafe_metadata: UserUnsafeMetadata;
   created_at: number;
   updated_at: number;
+  last_active_at: number | null;
 }
 
 export interface VerificationJSON extends ClerkResourceJSON {
diff --git a/packages/backend/src/api/resources/User.ts b/packages/backend/src/api/resources/User.ts
index c3017fdcb67..a83beee602b 100644
--- a/packages/backend/src/api/resources/User.ts
+++ b/packages/backend/src/api/resources/User.ts
@@ -33,6 +33,7 @@ export class User {
     readonly phoneNumbers: PhoneNumber[] = [],
     readonly web3Wallets: Web3Wallet[] = [],
     readonly externalAccounts: ExternalAccount[] = [],
+    readonly lastActiveAt: number | null,
   ) {}
 
   static fromJSON(data: UserJSON): User {
@@ -64,6 +65,7 @@ export class User {
       (data.phone_numbers || []).map(x => PhoneNumber.fromJSON(x)),
       (data.web3_wallets || []).map(x => Web3Wallet.fromJSON(x)),
       (data.external_accounts || []).map((x: ExternalAccountJSON) => ExternalAccount.fromJSON(x)),
+      data.last_active_at,
     );
   }
 }