Loch Lubnaig (Loch Lùbnaig in Gaelic) is a small freshwater loch near Callander in the Stirling council area, Scottish Highlands. It lies in the former county of Perthshire. It is part of the Loch Lomond & Trossachs National Park.The loch nestles in the space between Ben Ledi and Ben Vorlich. Fed by the River Balvaig from the north and drained by the Garbh Uisge to the south, Loch Lubnaig offers fishing from the shore while canoes can be rented at the north end.