ABJ
ABJ may refer to:
- ABJ (motorcycle), a 1950s bike built by AB Jackson Cycles of Birmingham, England
- Adler–Bell–Jackiw anomaly, in theoretical physics
- Aka-Bea language, ISO 639 code
- Anything But Joey, pop-rock band
- Bachelor of Arts in Journalism, degree at the University of Georgia, United States
Aviation
- Abaeté Linhas Aéreas, Brazil airline ICAO code
- IATA airport code for Félix-Houphouët-Boigny International Airport in District of Abidjan, Ivory Coast