Kochyerigin DI-6 (internal designation TsKB-11; Russian: Кочеригин ДИ-6/ЦКБ-11) was a two-seat fighter biplane produced in the Soviet Union in the 1930s.

To maximize the gunner's arc of fire, the rear cockpit was set lower in the fuselage than the pilot's.

The first flight took place on 30 September 1934, and testing began in earnest in early 1935, with State Acceptance Trials following between May and November.

Despite a number of weaknesses discovered during testing, the type was ordered into production, and deliveries to the Soviet Air Force commenced in the spring of 1937.

Pre-Glasnost Western sources often reported these aircraft as having participated in the Battle of Khalkhin Gol against Japan in 1939, and even in the Winter War against Finland in 1939–1940, but more recent scholarship has failed to uncover any evidence that it was deployed in either case.