The Rolls-Royce Cullinan is a full-sized luxury sport utility vehicle (SUV) manufactured by Rolls-Royce Motor Cars as the brand's first all-wheel drive vehicle. It is named after the Cullinan Diamond, the largest gem-quality rough diamond ever discovered.

A sport utility vehicle (SUV) is a car classification that combines elements of road-going passenger cars with features from off-road vehicles, such as raised ground clearance and four-wheel drive.