The CMP FAT (Field Artillery Tractor), was a Canadian Military Pattern vehicle manufactured by Ford and Chevrolet.

The FAT was an artillery tractor of the British and Commonwealth forces during World War II.

CMP stood for Canadian Military Pattern and was applied to a number of trucks, artillery tractors and utility vehicles built in Canada that combined British design requirements with North American automotive engineering.

A power winch was located above the rear axle for maneuvering the gun or unbogging the vehicle.

Specification was based on the successful British Morris C8 FAT developed before the war, even incorporating right-hand-drive steering.