J3
J3 stands for:
- Grenada, an island country after the aircraft identification
- HMS J3, a submarine of the Royal Navy in the First World War
- JOVIAL, a dialect of the language of the military of the United States
- Northwestern Air, a Canadian airline after the IATA airline code
- Piper J -3, a single-engine, two-seat aircraft
- Operational deployment guidance department at the Armed Forces Command of the Austrian Armed Forces and the Operational Command of the German Armed Forces
- Soy milk and soy milk products under the Federal Food Key
- Wright J- 3, a motor of manufacturer Wright Aeronautical
- The Johnson - body J3, the triangular dome
- J3 League, third highest Japanese football league
- Disambiguation
- Abbreviation