UEC-Aviadvigatel JSC is a Russian developer and builder of aircraft engines, most notably jet engines for commercial aircraft. Based at the Perm Engine Plant, its products power the Ilyushin Il-76MF, Ilyushin Il-96, Tupolev Tu-204, and Tupolev Tu-214. It also designs and builds high-efficiency gas turbine units for electric power stations and for gas pumping plants. The company has its background in the Experimental Design Bureau-19 plant, set up to manufacture aircraft engines.

An aircraft engine, often referred to as an aero engine, is the power component of an aircraft propulsion system. Aircraft using power components are referred to as powered flight. Most aircraft engines are either piston engines or gas turbines, although a few have been rocket powered and in recent years many small UAVs have used electric motors.