MACA or maca can mean:
- Maca (plant)
Places:
- Maca District, Peru
- Cerro Macá, stratovolcano in the Aisén Region of Chile
- Maca River, Romania
- 5228 Máca, an asteroid
People:
- Alain Maca (born 1950), Belgian-American retired soccer player
- Joe Maca (1920-1982), American soccer player
- Dragan Marinković (actor) (born 1968), Bosnian and Serbian actor and TV personality
MACA:
- Military Aid to the Civil Authorities, a collective term used by the Ministry of Defence of the United Kingdom
- Multiple Access with Collision Avoidance, a protocol used in wireless LAN data transmission
- Mongol-American Cultural Association
- Alicante Museum of Contemporary Art (in Spanish Museo de Arte Contemporáneo de Alicante), in Alicante, Spain
- Together: Working for Well-being, a UK charity formerly known as the Mental After Care Association