| Acronym | Definition |
|---|
| WHAC➣Wolverine Hoosier Athletic Conference |
| WHAC➣Workplace Hazard Awareness Course (Institution of Occupational Safety and Health; UK) |
| WHAC➣West Herts Against Crime (Watford, Hertfordshire) |
| WHAC➣Wouldn't Have A Clue |
| WHAC➣World Handwriting Achievement Competition |
| WHAC➣Women and HIV/AIDS Coalition |
| WHAC➣Westergreen Heating and Air Conditioning (Washington) |