ACU
ACU is an abbreviation for:
- Achutupo Airport Achutupo, Panama to the IATA code
- Address Control Unit, see address control unit
- American Conservative Union
- Armored Command Unit, see Supreme Commander # Armored Command Unit
- Army Combat Uniform, Battle Dress of the U.S. Army
- Asian Currency Unit ( engl. Asian Currency Unit), a proposed common currency unit for the ten countries of ASEAN, and additionally the People's Republic of China, Japan and South Korea
- Association of Commonwealth Universities
- Associazione Consumatori Utenti
- Australian Catholic University (ACU National), the only national Catholic university in Australia
- Auto- Cycle Union, the British Motorcycle Racing Association
- Automatic Calling Unit, see Automatic dialing
- Disambiguation
- Abbreviation