diff --git a/app/services/users/unblock_service.rb b/app/services/users/unblock_service.rb
index 1302395662fc194e808471faf55e37935d8b9a66..d80f65b5757f8f45bd65f3fbbafe7e2490ac6269 100644
--- a/app/services/users/unblock_service.rb
+++ b/app/services/users/unblock_service.rb
@@ -27,3 +27,5 @@ def after_unblock_hook(user)
     end
   end
 end
+
+Users::UnblockService.prepend_mod_with('Users::UnblockService')
diff --git a/ee/app/services/ee/users/unblock_service.rb b/ee/app/services/ee/users/unblock_service.rb
new file mode 100644
index 0000000000000000000000000000000000000000..5b648780cd43e544eccc25ab6ce6ae1d2b46bce1
--- /dev/null
+++ b/ee/app/services/ee/users/unblock_service.rb
@@ -0,0 +1,30 @@
+# frozen_string_literal: true
+
+module EE
+  module Users
+    module UnblockService
+      extend ::Gitlab::Utils::Override
+
+      override :after_unblock_hook
+      def after_unblock_hook(user)
+        super
+        log_audit_event(user)
+      end
+
+      private
+
+      def log_audit_event(user)
+        audit_context = {
+          name: 'unblock_user',
+          author: current_user,
+          scope: user,
+          target: user,
+          message: "Unblocked user",
+          target_details: user.username
+        }
+
+        ::Gitlab::Audit::Auditor.audit(audit_context)
+      end
+    end
+  end
+end
diff --git a/ee/config/audit_events/types/unblock_user.yml b/ee/config/audit_events/types/unblock_user.yml
new file mode 100644
index 0000000000000000000000000000000000000000..7ecdf30652947fe036cd46ad94766ec0b376267e
--- /dev/null
+++ b/ee/config/audit_events/types/unblock_user.yml
@@ -0,0 +1,8 @@
+name: unblock_user
+description: Event triggered on user unblock action 
+introduced_by_issue: https://gitlab.com/gitlab-org/gitlab/-/issues/377620
+introduced_by_mr: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/115727
+feature_category: "compliance_management"
+milestone: "15.11"
+saved_to_database: true
+streamed: true
diff --git a/ee/spec/services/ee/users/unblock_service_spec.rb b/ee/spec/services/ee/users/unblock_service_spec.rb
new file mode 100644
index 0000000000000000000000000000000000000000..2a91d5de8a9c68b353fb8ffeb971db2b430d9acd
--- /dev/null
+++ b/ee/spec/services/ee/users/unblock_service_spec.rb
@@ -0,0 +1,63 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Users::UnblockService, feature_category: :user_management do
+  let_it_be(:current_user) { create(:admin) }
+
+  subject(:service) { described_class.new(current_user) }
+
+  describe '#execute' do
+    let!(:user) { create(:user, :blocked) }
+
+    subject(:operation) { service.execute(user) }
+
+    describe 'audit events' do
+      context 'when licensed' do
+        before do
+          stub_licensed_features(admin_audit_log: true)
+        end
+
+        context 'when user unblock operation succeeds' do
+          it 'logs an audit event' do
+            expect { operation }.to change { AuditEvent.count }.by(1)
+          end
+
+          it 'logs the audit event info' do
+            operation
+
+            expect(AuditEvent.last).to have_attributes(
+              details: hash_including(custom_message: 'Unblocked user')
+            )
+          end
+        end
+
+        context 'when user unblock operation fails' do
+          let!(:user) { create(:user) }
+
+          before do
+            allow(user).to receive(:unblock).and_return(false)
+          end
+
+          it 'does not log any audit event' do
+            expect { operation }.not_to change { AuditEvent.count }
+          end
+        end
+      end
+
+      context 'when not licensed' do
+        before do
+          stub_licensed_features(
+            admin_audit_log: false,
+            audit_events: false,
+            extended_audit_events: false
+          )
+        end
+
+        it 'does not log any audit event' do
+          expect { operation }.not_to change { AuditEvent.count }
+        end
+      end
+    end
+  end
+end