People
* KJ Apa (born 1997), New Zealand actor and singer known for his role as Archie Andrews on '' Riverdale''Other uses
* Kwanyama dialect (ISO 639-1 code alpha-2kj), a standardized dialect of Oshiwambo
* Kilojoule (kJ), an International System of Units unit of energy equal to 1000 joules
* British Mediterranean Airways (IATA airline code KJ)
* Jeep Liberty, a car (model code KJ)
* Karaoke jockey, a disk jockey who specializes in running karaoke performances
* Kiryas Joel, New York, a village in Monroe, Orange County, New York, US
See also
* Kayjay, Kentucky * Killjoy (disambiguation) *