diff --git a/app/services/projects/unlink_fork_service.rb b/app/services/projects/unlink_fork_service.rb
index 9eccc16a8b25d947321d620b371fe6c45f05ae26..898421364db3a17d5e22f3a5da2192cf219ded94 100644
--- a/app/services/projects/unlink_fork_service.rb
+++ b/app/services/projects/unlink_fork_service.rb
@@ -60,3 +60,5 @@ def refresh_forks_count(project)
     end
   end
 end
+
+Projects::UnlinkForkService.prepend_mod_with('Projects::UnlinkForkService')
diff --git a/ee/app/services/ee/projects/unlink_fork_service.rb b/ee/app/services/ee/projects/unlink_fork_service.rb
new file mode 100644
index 0000000000000000000000000000000000000000..0aedf1e8b72b50e6bc6ede418d2d6a990a4a6ea4
--- /dev/null
+++ b/ee/app/services/ee/projects/unlink_fork_service.rb
@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+module EE
+  module Projects
+    module UnlinkForkService
+      extend ::Gitlab::Utils::Override
+
+      override :execute
+      def execute
+        super.tap do |result|
+          log_audit_event if result.present?
+        end
+      end
+
+      def log_audit_event
+        audit_context = {
+          name: 'project_fork_relationship_removed',
+          author: current_user,
+          scope: project,
+          target: project,
+          message: "Project unlinked from #{project.forked_from_project&.name}",
+          created_at: DateTime.current
+        }
+
+        ::Gitlab::Audit::Auditor.audit(audit_context)
+      end
+    end
+  end
+end
diff --git a/ee/config/audit_events/types/project_fork_relationship_removed.yml b/ee/config/audit_events/types/project_fork_relationship_removed.yml
new file mode 100644
index 0000000000000000000000000000000000000000..9a81ff95c962091e7f862c0faef0816ceed66bc3
--- /dev/null
+++ b/ee/config/audit_events/types/project_fork_relationship_removed.yml
@@ -0,0 +1,8 @@
+name: project_fork_relationship_removed
+description: Event triggered on successful removal of project's fork relationship
+introduced_by_issue: https://gitlab.com/gitlab-org/gitlab/-/issues/272532
+introduced_by_mr: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/101017
+group: "group::compliance"
+milestone: "15.6"
+saved_to_database: true
+streamed: true
diff --git a/ee/spec/services/ee/projects/unlink_fork_service_spec.rb b/ee/spec/services/ee/projects/unlink_fork_service_spec.rb
new file mode 100644
index 0000000000000000000000000000000000000000..7509c5306241610412de466a59ea8f433c383a74
--- /dev/null
+++ b/ee/spec/services/ee/projects/unlink_fork_service_spec.rb
@@ -0,0 +1,74 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Projects::UnlinkForkService, :use_clean_rails_memory_store_caching do
+  include ProjectForksHelper
+
+  subject(:unlink_fork) { described_class.new(forked_project, user).execute }
+
+  let_it_be(:project) { create(:project, :public) }
+  let_it_be(:user) { create(:user) }
+
+  context 'when forked project is unlinked from parent' do
+    let!(:forked_project) { fork_project(project, user) }
+
+    it 'creates an audit event', :aggregate_failures do
+      expect(::Gitlab::Audit::Auditor)
+            .to receive(:audit).with(
+              hash_including({ name: "project_fork_relationship_removed" })).and_call_original
+
+      expect { unlink_fork }.to change(AuditEvent, :count).by(1)
+
+      expect(AuditEvent.last).to have_attributes({
+                                                   author: user,
+                                                   entity_id: forked_project.id,
+                                                   target_type: project.class.name,
+                                                   details: {
+                                                     author_class: user.class.name,
+                                                     author_name: user.name,
+                                                     custom_message: "Project unlinked from #{project.name}",
+                                                     target_details: forked_project.name,
+                                                     target_id: forked_project.id,
+                                                     target_type: forked_project.class.name
+                                                   }
+                                                 })
+    end
+
+    context 'when forked project does not exist' do
+      before do
+        project.destroy!
+      end
+
+      it 'creates an audit event', :aggregate_failures do
+        expect(::Gitlab::Audit::Auditor)
+          .to receive(:audit).with(
+            hash_including({ name: "project_fork_relationship_removed" })).and_call_original
+
+        expect { unlink_fork }.to change(AuditEvent, :count).by(1)
+
+        expect(AuditEvent.last).to have_attributes({
+                                                     author: user,
+                                                     entity_id: forked_project.id,
+                                                     target_type: project.class.name,
+                                                     details: {
+                                                       author_class: user.class.name,
+                                                       author_name: user.name,
+                                                       custom_message: "Project unlinked from ",
+                                                       target_details: forked_project.name,
+                                                       target_id: forked_project.id,
+                                                       target_type: forked_project.class.name
+                                                     }
+                                                   })
+      end
+    end
+  end
+
+  context 'when no unlinking is performed' do
+    let(:forked_project) { project }
+
+    it 'does not create an audit event' do
+      expect { subject }.not_to change(AuditEvent, :count)
+    end
+  end
+end