- ACWI stands for All Country World Index
- ACWI stands for Advisory Committee on Water Information
- ACWI stands for Aboriginal Centre of Winnipeg, Inc. (Canada)
- ACWI stands for Agricultural Clean Water Initiative Foundation (Sacramento, CA)
- ACWI stands for American Chain of Warehouses, Inc. (Beacher, IL)
- ACWI stands for Air Combat Warfare International (Canada)
ACWI