Jagdgeschwader 300 (JG 300) was a Luftwaffe fighter-wing of World War II. 

JG 300 had its origin in April 1943, a decorated bomber pilot, advocated the use of single-seat day fighters as night fighters againts

the Royal Air Force (RAF) bomber offensive. He suggested that single seat fighters could operate in the bombers' general target area using the light of target indicators, massed searchlights and the fires on the ground to spot their targets.