- ACW stands for Arts Council of Wales
- ACW stands for Ashfield-Colborne-Wawanosh (Canada)
- ACW stands for American Civil War
- ACW stands for Arts Council of Wales (UK)
- ACW stands for Assessed Course Work
- ACW stands for Air Control Wing
- ACW stands for Aero Club of Washington (Washington, DC)
- ACW stands for American Cord & Webbing (Woonsocket, RI)
- ACW stands for All Country World (market index)
- ACW stands for After Call Work (call centers)
- ACW stands for Alliance for Computers and Writing
- ACW stands for Antarctic Circumpolar Wave
- ACW stands for African Centre for Women
ACW