WHAC
| 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) |