The Alvis Firefly is an automobile produced in between 1932 and 1934. It followed the 12/50 TJ model. In 1932 a roadster was introduced and later in 1933 a 4-door touring car, a saloon and a 2-door convertible were introduced. In 1934 it was replaced by the Firebird.

The car was powered by a front-mounted four-cylinder engine, with a displacement of 1.5 litres and 50 hp (37 kW). The engine was cheap to produce as it was essentially the same as the 12/50 TH and suited the then-popular 1.5-litre class. The top speed of this car was 115 km/h in depending on the design. A total of 1,775 examples were produced.