The Austin 28 was a car in the luxury class made by the Austin Motor Co. in 1938 as a successor to the Austin 20.

The 28 had a six-cylinder engine with 4016cc engine which produced 90bhp (66 kW). The heavy vehicle was 5,232 mm long and supplied as a six-seater Pullman limousine.

After two years, the production of the model was discontinued due to the outbreak of war. Successors appeared in 1947 with the Austin A125 Sheerline and the Austin A135 Princess.