diff --git a/CHANGELOG.md b/CHANGELOG.md
index 57bc7db91..c0f4bdca9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## [Unreleased](https://github.com/Instabug/Instabug-Flutter/compare/v12.5.0...dev)
+
+### Added
+
+- Support user identification using ID ([#435](https://github.com/Instabug/Instabug-Flutter/pull/435)).
+
 ## [12.5.0](https://github.com/Instabug/Instabug-Flutter/compare/v12.4.0...v12.5.0) (January 08 , 2024)
 
 ### Changed
diff --git a/android/src/main/java/com/instabug/flutter/modules/InstabugApi.java b/android/src/main/java/com/instabug/flutter/modules/InstabugApi.java
index c67c1b41b..80e9cfa67 100644
--- a/android/src/main/java/com/instabug/flutter/modules/InstabugApi.java
+++ b/android/src/main/java/com/instabug/flutter/modules/InstabugApi.java
@@ -118,8 +118,8 @@ public void showWelcomeMessageWithMode(@NonNull String mode) {
     }
 
     @Override
-    public void identifyUser(@NonNull String email, @Nullable String name) {
-        Instabug.identifyUser(name, email);
+    public void identifyUser(@NonNull String email, @Nullable String name, @Nullable String userId) {
+        Instabug.identifyUser(name, email, userId);
     }
 
     @Override
diff --git a/android/src/test/java/com/instabug/flutter/InstabugApiTest.java b/android/src/test/java/com/instabug/flutter/InstabugApiTest.java
index 5e4e9d27e..140daab65 100644
--- a/android/src/test/java/com/instabug/flutter/InstabugApiTest.java
+++ b/android/src/test/java/com/instabug/flutter/InstabugApiTest.java
@@ -174,10 +174,11 @@ public void testShowWelcomeMessageWithMode() {
     public void testIdentifyUser() {
         String email = "inst@bug.com";
         String name = "John Doe";
+        String id = "123";
 
-        api.identifyUser(email, name);
+        api.identifyUser(email, name, id);
 
-        mInstabug.verify(() -> Instabug.identifyUser(name, email));
+        mInstabug.verify(() -> Instabug.identifyUser(name, email, id));
     }
 
     @Test
diff --git a/example/ios/InstabugTests/InstabugApiTests.m b/example/ios/InstabugTests/InstabugApiTests.m
index a7f624774..3b55e0c3f 100644
--- a/example/ios/InstabugTests/InstabugApiTests.m
+++ b/example/ios/InstabugTests/InstabugApiTests.m
@@ -64,23 +64,15 @@ - (void)testShowWelcomeMessageWithMode {
     OCMVerify([self.mInstabug showWelcomeMessageWithMode:IBGWelcomeMessageModeLive]);
 }
 
-- (void)testIdentifyUserGivenName {
+- (void)testIdentifyUser {
     NSString *email = @"inst@bug.com";
     NSString *name = @"John Doe";
+    NSString *userId = @"123";
     FlutterError *error;
 
-    [self.api identifyUserEmail:email name:name error:&error];
+    [self.api identifyUserEmail:email name:name userId:userId error:&error];
 
-    OCMVerify([self.mInstabug identifyUserWithEmail:email name:name]);
-}
-
-- (void)testIdentifyUserGivenNoName {
-    NSString *email = @"inst@bug.com";
-    FlutterError *error;
-
-    [self.api identifyUserEmail:email name:[NSNull null] error:&error];
-
-    OCMVerify([self.mInstabug identifyUserWithEmail:email name:nil]);
+    OCMVerify([self.mInstabug identifyUserWithID:userId email:email name:name]);
 }
 
 - (void)testSetUserData {
diff --git a/ios/Classes/Modules/InstabugApi.m b/ios/Classes/Modules/InstabugApi.m
index 4c3ae92d8..7def622f0 100644
--- a/ios/Classes/Modules/InstabugApi.m
+++ b/ios/Classes/Modules/InstabugApi.m
@@ -55,12 +55,8 @@ - (void)showWelcomeMessageWithModeMode:(NSString *)mode error:(FlutterError *_Nu
     [Instabug showWelcomeMessageWithMode:resolvedMode];
 }
 
-- (void)identifyUserEmail:(NSString *)email name:(nullable NSString *)name error:(FlutterError *_Nullable *_Nonnull)error {
-    if ([name isKindOfClass:[NSNull class]]) {
-        [Instabug identifyUserWithEmail:email name:nil];
-    } else {
-        [Instabug identifyUserWithEmail:email name:name];
-    }
+- (void)identifyUserEmail:(NSString *)email name:(nullable NSString *)name userId:(nullable NSString *)userId error:(FlutterError *_Nullable *_Nonnull)error {
+    [Instabug identifyUserWithID:userId email:email name:name];
 }
 
 - (void)setUserDataData:(NSString *)data error:(FlutterError *_Nullable *_Nonnull)error {
diff --git a/lib/src/modules/instabug.dart b/lib/src/modules/instabug.dart
index 2f75e4d4d..54450c1e5 100644
--- a/lib/src/modules/instabug.dart
+++ b/lib/src/modules/instabug.dart
@@ -180,11 +180,15 @@ class Instabug {
   }
 
   /// Sets the default value of the user's [email] and hides the email field from the reporting UI
-  /// and set the user's [name] to be included with all reports.
+  /// and set the user's [name] and [id] to be included with all reports.
   /// It also reset the chats on device to that email and removes user attributes,
   /// user data and completed surveys.
-  static Future<void> identifyUser(String email, [String? name]) async {
-    return _host.identifyUser(email, name);
+  static Future<void> identifyUser(
+    String email, [
+    String? name,
+    String? id,
+  ]) async {
+    return _host.identifyUser(email, name, id);
   }
 
   /// Sets the default value of the user's email to nil and show email field and remove user name
diff --git a/pigeons/instabug.api.dart b/pigeons/instabug.api.dart
index e1d0dfc1e..2d1308ce1 100644
--- a/pigeons/instabug.api.dart
+++ b/pigeons/instabug.api.dart
@@ -8,7 +8,7 @@ abstract class InstabugHostApi {
   void show();
   void showWelcomeMessageWithMode(String mode);
 
-  void identifyUser(String email, String? name);
+  void identifyUser(String email, String? name, String? userId);
   void setUserData(String data);
   void logUserEvent(String name);
   void logOut();
diff --git a/test/instabug_test.dart b/test/instabug_test.dart
index f1b784f09..8f623796e 100644
--- a/test/instabug_test.dart
+++ b/test/instabug_test.dart
@@ -69,14 +69,26 @@ void main() {
     ).called(1);
   });
 
-  test('[identifyUser] should call host method', () async {
+  test('[identifyUser] should call host method with no ID', () async {
     const email = "inst@bug.com";
     const name = "Instabug";
 
     await Instabug.identifyUser(email, name);
 
     verify(
-      mHost.identifyUser(email, name),
+      mHost.identifyUser(email, name, null),
+    ).called(1);
+  });
+
+  test('[identifyUser] should call host method with an ID', () async {
+    const email = "inst@bug.com";
+    const name = "Instabug";
+    const id = "123";
+
+    await Instabug.identifyUser(email, name, id);
+
+    verify(
+      mHost.identifyUser(email, name, id),
     ).called(1);
   });