| Acronym | Definition |
|---|
| WHAT | Winter Haven Area Transit |
| WHAT | Wilmington Health Access for Teens (North Carolina) |
| WHAT | Wellfleet Harbor Actors Theater (Wellfleet, MA) |
| WHAT | Web Hypertext Application Technology |
| WHAT | Wireless Hybrid Asynchronous Time Bounded |
| WHAT | Web Hypertext Applications Technology |
| WHAT | West Hills Aquatic Team |
| WHAT | Wetland Habitat Alliance of Texas |
| WHAT | Wacky Harebrained Absurd Trivia (game at LuckySurf.com, Inc.) |
| WHAT | Wheels Hull Armour Turret |
| WHAT | Warning-Homing-Avoidance-Targeting |
| WHAT | West Houston Aquatics Team (Texas) |
| WHAT | World Hunger Awareness Team |