FJ
# FJ

FJ may refer to:

## Places

* Fiji (ISO 3166-1 alpha-2 country code)
   * .fj, the country code top level domain (ccTLD) for Fiji
   * Fijian language (ISO 639-1 language code)
* Fujian, a province of China

## Vehicles

* FJ Fury, an early Cold War fighter aircraft of the US Navy
* Flying Junior, a sailing dinghy
* Holden FJ, an Australian car
* Jeep FJ, a compact delivery van
* Toyota FJ Cruiser, a sport utility vehicle
* Yamaha FJ, motorcycle

## Science and mathematics

* The FASEB Journal, a scientific journal of experimental biosciences
* Femtojoule (fJ), an SI unit of energy equal to $10^{−15}$ joules
* Fritz John conditions, conditions in optimization problems

## Media

* FictionJunction, a J-pop group
* The FJ Holden, an Australian film

## Military

* Fallschirmjäger, German paratroopers
* Fahnenjunker, a military rank of the Bundeswehr
* FJ ABM, an anti-ballistic missile
* Young Force (Fuerza Joven), the former youth wing of the Fuerza Nueva
* Youth Front (Frente de la Juventud), a Spanish terrorist organization

## Aviation

* Fiji Airways (IATA code)
* Williams FJ33 and FJ44, families of turbofan jet engines

## Other uses

* FJ Management, an American corporation
* FJ Reitz High School, a public high school in Evansville, Indiana
* Formula Junior, an auto racing class
* Sony Vaio FJ, a mid-2000s series of laptops
