MV Loch Ranza (Scottish Gaelic: Loch Raonasa) is a Caledonian Maritime Assets Limited ro-ro car ferry, operated by Caledonian MacBrayne, serving the island of Gigha.

MV Loch Ranza was the last of four drive-through ferries built in the 1980s by Dunston's of Hessle, to cope with increasing traffic on CalMac's smaller routes.

[4] The four vessels were based on the design of MV Isle of Cumbrae.

[4] They had a second passenger lounge, on the port side, reducing the capacity of the car deck.

Loch Ranza moved to the Tayinloan–Gigha crossing in July 1992, where she has remained since.