The Bristol Blenheim is a British light bomber and heavy fighter aircraft from World War II. It features a all-metal construction and half-fuselage. Depending on the version, it is powered by two engines of the Bristol Mercury VIII (Mk.I version) or Bristol Mercury XV (Mk.IV version).

The first flight of the prototype Bristol Blenheim took place in 1935, with mass production beginning the same year. The initial version, the Bristol Blenheim Mk.I, served as a light bomber, while in 1937 it was replaced by the Mk.IV version, which is characterized by longer wings and a distinctive depression in the nose of the fuselage.

An also developed heavy fighter version (Mk.IF), of which only 200 units were produced. During the war, they were equipped with AI Mk I radar and reassigned for service.