ACM is an abbreviation and a TLA that may stand for:

• Association for Computing Machinery, an association of computing practitioners
• ACM International Collegiate Programming Contest
• Academy of Country Music
• Academic Common Market
• Academy of Contemporary Music (acm.ac.uk)
• Air combat manoeuvering
• Air Cycle Machine
• Aerial Combat Maneuver
• Adams Capital Management (acm.com)
• Advanced compact MOSFET
• Advanced Currency Markets
• Alliance for Community Media
• Another Chicago Magazine
• Anti-cult movement
• Arnold Chiari malformation
• Associação de Ciclismo do Minho (acm.pt)
• Associated Colleges of the Midwest (acm.edu)
• Associated Constructors of Maine Inc.
• Audio Compression Manager
• Automobile Club de Monaco (acm.mc)