AJ
AJ may stand for:
- Active jamming
- Adjustable spanner
- Alexander James McLean (Backstreet Boys)
- Alpinisme Juvénile (France)
- Andrew Jackson
- Anti-jam, Anti-jamming
- Anup Jalota (singer)
- Apostles of Jesus
- Apple juice
- Ask Jeeves (aj.com)
- Association de la Jeunesse
- Astronomical Journal
- Atari Jaguar
- Auberge jeunesse
- Aunt Jemima
- Azerbaijan
