ABJ

Abj is an abbreviation for abject, abjunction, and abjuration. ABJ may also 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