The Armstrong Siddeley Whitley is a large post-war sports saloon automobile and a version of the 16/18 hp series made between 1946 and 1954 by the British company of Armstrong Siddeley.

The Whitley only used the larger 2309 cc overhead valve engine with a tax rating of 18 hp that had first appeared on export versions of the Tempest coupled with a choice of synchromesh or pre-selector gearbox.

The front suspension was independent using torsion bars, while at the rear was a live axle and leaf springs.

A Girling hydro-mechanical braking system was fitted, with the front drums hydraulically operated, while those at the rear were cable.

Most common are the 4 or 6 light saloons, but limousines were also made on a long-wheelbase chassis from 1950 to 1952.