J4
J4 or J-4 stands for:
- Buffalo Airways, a Canadian airline after the IATA airline code
- Meat replacement products under the Federal Food Key
- HMS J4, a British submarine of the Royal Navy in the First World War
- J4 Supercharged, a car model of the British manufacturer MG
- Junkers J4, a two-seat ground attack aircraft of the German Air Force in World War I
- J-4 is the Chinese name of the MiG-17 delivered to China, see Mikoyan-Gurevich MiG -17 # China
- Wright J-4, an aircraft engine
- The Johnson - body J4 square dome
- Disambiguation
- Abbreviation