ACW
ACW is an abbreviation for:
- Agroscope Changins- Wädenswil, collective name of three research institutes of the Swiss Federal Office for Agriculture
- American Civil War American Civil War of 1861-1865 between the southern and northern states
- Arts Council of Wales, Wales, part of the United Kingdom
- Athletic Club Wrestling Germany, see Wrestling
- Atlantic City Airport in the state of New Jersey, USA to the IATA code
- Automated Call Waiting, concept of telephony
- Disambiguation
- Abbreviation