The Campbeltown and Machrihanish Light Railway was a 2 ft 3 in narrow gauge railway in Kintyre, Scotland, between Campbeltown and the coalmining village of Machrihanish. Only three other passenger-carrying lines in the UK operated on the same gauge, all of them in Wales - the Corris Railway, the short-lived Plynlimon and Hafan Tramway and the Talyllyn Railway.

Kintyre is a peninsula in western Scotland, in the southwest of Argyll and Bute. The peninsula stretches about 30 miles, from the Mull of Kintyre in the south to East and West Loch Tarbert in the north. The region immediately north of Kintyre is known as Knapdale.