diff --git a/core/deleter/service.go b/core/deleter/service.go
index a2ccf2965..a3b780249 100644
--- a/core/deleter/service.go
+++ b/core/deleter/service.go
@@ -270,9 +270,15 @@ func (d Service) deleteProject(ctx context.Context, prj project.Project) error {
 		}
 	}
 
-	if err := d.projService.DeleteModel(ctx, prj.ID); err != nil && !errors.Is(err, project.ErrNotExist) {
+	if err := d.projService.DeleteModel(ctx, prj.ID); err != nil {
+		if errors.Is(err, project.ErrNotExist) {
+			return nil
+		}
 		return err
 	}
+	if err := audit.NewLogger(ctx, prj.Organization.ID).Log(audit.ProjectDeletedEvent, audit.ProjectTarget(prj.ID)); err != nil {
+		slog.WarnContext(ctx, "failed to write audit log", "error", err, "event", audit.ProjectDeletedEvent)
+	}
 	return nil
 }
 
diff --git a/core/deleter/service_test.go b/core/deleter/service_test.go
index ad3f74aac..f928378d1 100644
--- a/core/deleter/service_test.go
+++ b/core/deleter/service_test.go
@@ -164,9 +164,31 @@ func TestDeleteProject(t *testing.T) {
 		m.resSvc.EXPECT().List(mock.Anything, resource.Filter{ProjectID: projectID}).
 			Return([]resource.Resource{}, nil)
 		m.projSvc.EXPECT().DeleteModel(mock.Anything, projectID).Return(project.ErrNotExist)
+		repo := &fakeAuditRepository{}
 
-		err := m.build().DeleteProject(context.Background(), projectID)
+		err := m.build().DeleteProject(auditContext(repo), projectID)
 		assert.NoError(t, err)
+		assert.Empty(t, repo.logs)
+	})
+
+	t.Run("publishes the project deleted event with the project's org", func(t *testing.T) {
+		m := newMocks(t)
+		m.projSvc.EXPECT().List(mock.Anything, project.Filter{ProjectIDs: []string{projectID}, IncludeDisabled: true}).
+			Return([]project.Project{{ID: projectID, Name: "p1", Organization: organization.Organization{ID: "org-1"}}}, nil)
+		m.polSvc.EXPECT().List(mock.Anything, policy.Filter{ProjectID: projectID}).
+			Return([]policy.Policy{}, nil)
+		m.resSvc.EXPECT().List(mock.Anything, resource.Filter{ProjectID: projectID}).
+			Return([]resource.Resource{}, nil)
+		m.projSvc.EXPECT().DeleteModel(mock.Anything, projectID).Return(nil)
+		repo := &fakeAuditRepository{}
+
+		err := m.build().DeleteProject(auditContext(repo), projectID)
+		assert.NoError(t, err)
+		if assert.Len(t, repo.logs, 1) {
+			assert.Equal(t, audit.ProjectDeletedEvent.String(), repo.logs[0].Action)
+			assert.Equal(t, "org-1", repo.logs[0].OrgID)
+			assert.Equal(t, audit.ProjectTarget(projectID), repo.logs[0].Target)
+		}
 	})
 
 	t.Run("a resource that is already gone does not stop the delete", func(t *testing.T) {
diff --git a/test/e2e/regression/api_test.go b/test/e2e/regression/api_test.go
index a85a1ad53..d88d6c9d6 100644
--- a/test/e2e/regression/api_test.go
+++ b/test/e2e/regression/api_test.go
@@ -3907,6 +3907,16 @@ func (s *APIRegressionTestSuite) TestOrganizationDeleteAlsoDeletesDisabledProjec
 		s.Assert().Equal(1, deletedResources)
 	})
 
+	s.Run("each project of the org is published as an app.project.deleted event", func() {
+		for _, id := range []string{enabledProjectID, disabledProjectID} {
+			var events int
+			s.Require().NoError(s.dbc.GetContext(context.Background(), &events,
+				"SELECT count(*) FROM auditlogs WHERE action = $1 AND org_id = $2 AND target->>'ID' = $3",
+				"app.project.deleted", orgID, id))
+			s.Assert().Equal(1, events, id)
+		}
+	})
+
 	s.Run("the org is gone, a second delete is refused", func() {
 		_, err := s.testBench.Client.DeleteOrganization(ctxOrgAdminAuth, connect.NewRequest(&frontierv1beta1.DeleteOrganizationRequest{Id: orgID}))
 		s.Require().Error(err)
@@ -4071,6 +4081,14 @@ func (s *APIRegressionTestSuite) TestProjectDeleteKeepsTheRowAndRemovesAccess()
 		s.Assert().Equal(1, deletedRows)
 	})
 
+	s.Run("the delete is published as an app.project.deleted event", func() {
+		var events int
+		s.Require().NoError(s.dbc.GetContext(context.Background(), &events,
+			"SELECT count(*) FROM auditlogs WHERE action = $1 AND org_id = $2 AND target->>'ID' = $3",
+			"app.project.deleted", orgID, projectID))
+		s.Assert().Equal(1, events)
+	})
+
 	s.Run("a second delete is refused", func() {
 		_, err := s.testBench.Client.DeleteProject(ctxOrgAdminAuth, connect.NewRequest(&frontierv1beta1.DeleteProjectRequest{Id: projectID}))
 		s.Require().Error(err)