Inverlochy Castle (Scottish Gaelic: Caisteal Inbhir Lòchaidh) is a ruined, 13th-century castle near the village of Inverlochy (Scottish Gaelic: Inbhir Lochaidh) which is north of the town of Fort William, Lochaber, Scottish Highlands, Scotland (Scottish Gaelic: An Gearasdan, Loch Abar, a’ Ghàidhealtachd, Alba). The castle was built around 1270–1280 by John "the Black" Comyn, Lord of Badenoch and Lochaber, and chief of the Clan Comyn. It is thought to stand on the site of an earlier Pictish fortification. The castle remains seen today have a large curtain wall with round towers on each corner and are located northwest of Fort William and west of the A82 road before reaching the A830 road.