The Caledonian MacBrayne fleet is the largest fleet of car and passenger ferries in the United Kingdom, with 34 ferries in operation, 2 on charter and another 6 on order. The company provides lifeline services to 23 islands off the west coast of Scotland, as well as operating routes in the Firth of Clyde.

Caledonian MacBrayne, in short form CalMac, is the trade name of CalMac Ferries Ltd, the major operator of passenger and vehicle ferries to the west coast of Scotland, serving ports on the mainland and 22 of the major islands. It is a subsidiary of holding company David MacBrayne, which is owned by the Scottish Government.