The Lavochkin La-9 (NATO reporting name Fritz) was a Soviet fighter aircraft produced shortly after World War II.

Similarity to the famous Lavochkin La-7 was only superficial – the new fighter had an all-metal construction and a laminar flow wing.

Weight savings due to elimination of wood from the airframe allowed for greatly improved fuel capacity and four-cannon armament.

Like other aircraft designers at the time, Lavochkin was experimenting with using jet propulsion to augment performance of piston-engined fighters.

It was a production La-9 with a reinforced airframe and armament reduced to two cannons, which carried a single RD-13 pulsejet (the engine which powered the V-1 flying bomb, probably taken from surplus Luftwaffe stocks) under each wing.