ABM
- ABM (video game)
- ABM Industries
- ABM Intelligence
- Abahlali baseMjondolo
- Abanyom language
- Account-based marketing
- Activity-based management
- Advanced Bit Manipulation
- Advantage Business Media
- Agaricus Blazei Murill
- Agent-based model
- Air Battle Manager
- Anglican Board of Mission - Australia
- Ansar Bait al-Maqdis
- Anti-Ballistic Missile Treaty
- Anti-ballistic missile
- Asynchronous Balanced Mode
- Atmospheric Black Metal
- Automated banking machine
- Dalgety plc
- Northern Peninsula Airport