--- CControllerDashboardList.php	2025-05-23 14:58:38.714091119 +0200
+++ CControllerDashboardList.new.php	2025-05-23 15:00:23.699061534 +0200
@@ -100,6 +100,20 @@
 			'limit' => $limit,
 			'preservekeys' => true
 		]);
+		$ownerUserIds = array_column($data['dashboards'], 'userid');
+		$users = API::User()->get([
+		    'output' => ['userid', 'username'],
+		    'userids' => $ownerUserIds
+		]);
+
+		$userMap = [];
+		foreach ($users as $user) {
+		    $userMap[$user['userid']] = $user['username'];
+		}
+		foreach ($data['dashboards'] as &$dashboard) {
+		    $dashboard['username'] = $userMap[$dashboard['userid']] ?? _('Unknown');
+		}
+		unset($dashboard);
 		order_result($data['dashboards'], $sort_field, $sort_order);
 
 		// pager