Gairlochy (Scottish Gaelic: Geàrr Lòchaidh) is a clachan, or hamlet, of population approx. 100.^[1] It lies on the southern shores of Loch Lochy, a large freshwater loch in the district of Lochaber in the North West Highlands of Scotland. Gairlochy is surrounded by several other small crofting settlements, the largest of which is Achnacarry. Also close by is Highbridge, the site of the first skirmish of the 1745 Jacobite uprising.

Gairlochy Scottish Gaelic: Geàrr Lòchaidh
Gairlochy Location within the Lochaber area
Population	100
Language	English, Scottish Gaelic
OS grid reference	NN1752084268
Council area	Highland
Lieutenancy area	Inverness
Country	Scotland
Sovereign state	United Kingdom
Post town	Fort William
Postcode district	PH34 4
Dialling code	01397 712
Police	Scotland
Fire	Scottish
Ambulance	Scottish
UK Parliament	Ross, Skye and Lochaber
Scottish Parliament	Inverness East, Nairn and Lochaber
List of places UK Scotland 56°54′47″N 4°59′53″W / 56.913°N 4.998°W / 56.913; -4.998

Between 1803 and 1822, the Caledonian Canal was built, passing through Gairlochy, over the original site of the River Lochy. Two locks were built for access onto Loch Lochy, but only one, the Upper Lock, is still in use. At the lower lock an end pivoted swingbridge and lock keepers' house is provided to carry the B8005 road and Great Glen Way over the canal.

Completed in 1896, the Invergarry and Fort Augustus Railway passed through the clachan, with a small island-platform station, called Gairlochy Station,^[2] in nearby Mucomir, the current site of a caravan park and Mucomir hydro-electric power station.