The FG 42 (German: Fallschirmjägergewehr 42 or "paratrooper rifle 42") was a battle rifle. It was made in Nazi Germany during World War II. The weapon was made for use by Fallschirmjäger airborne infantry in 1942. It was used in small amounts until the war ended.

The FG 42 had the power of a light machine gun. It was light and was no larger than the Kar 98k bolt-action rifle. The FG 42 is thought to be one of the most advanced weapons of World War II. It helped shape the modern assault rifle idea.