The Sukhoi Su-34 NATO reporting name: Fullback, is a Russian twin-engine, twin-seat, all-weather supersonic medium-range fighter-bomber. It is intended to replace the Sukhoi Su-24 and first entered service in 2014 with the Russian Air Force.

Based on the Sukhoi Su-27, two-seat Su-34 is designed primarily for tactical deployment against ground and naval targets (tactical bombing/attack/interdiction roles, including against small and mobile targets) on solo and group missions in daytime and at night, under favourable and adverse weather conditions and in a hostile environment with counter-fire and EW counter-measures deployed, as well as for aerial reconnaissance.