OAM is an acronym that may refer to:
- Oamaru Aerodrome, New Zealand
- Object access method
- Observatorio Astronómico de Mallorca, an observatory in Spain
- U.S. 'Office of Alternative Medicine', whose duties have been taken over by the National Center for Complementary and Alternative Medicine (NCCAM)
- Operations, administration and management, mostly in computer networks or computer hardware
- Orbital angular momentum in physics
- Order of Australia Medal, an Australian national honour
- Ozy and Millie, a furry webcomic
- U.S. Customs and Border Protection's Office of Air and Marine
- Oracle Access Manager