ABM

ABM is a three-letter abbreviation with multiple meanings:

Activity-based management, a method of using activity-based costing and value chain analysis to improve strategic and operational decisions
Agent based model, a specific individual based computational model for computer simulation
Air Battle Manager, a rated flying position in the United States Air Force
Anti-Ballistic Missile Treaty, a treaty between the U.S. and U.S.S.R on the limitation of the anti-ballistic missile (ABM) systems
Anti-ballistic missile, a missile designed to counter ballistic missiles
Asynchronous Balanced Mode, a communication mode of HDLC and derivative protocols
Automated teller machine, which is sometimes referred to as an "automated banking machine"
Bamaga Injinoo Airport, in Bamaga, Queensland, Australia, which has the IATA airport code "ABM"
Uru: Ages Beyond Myst, an adventure computer game