| Acronym | Definition |
|---|
| WAT | West Africa Time (GMT-0100) |
| WAT | Work and Travel (cultural exchange program) |
| WAT | What |
| WAT | Way Ahead of Time (computing) |
| WAT | Windows Activation Technologies (Microsoft) |
| WAT | Walk-a-Thon (fundraising) |
| WAT | Without A Trace (TV show) |
| WAT | War against Terrorism |
| WAT | Waters Corp (stock symbol) |
| WAT | Wojskowa Akademia Techniczna (Polish: Military University of Technology) |
| WAT | Wheelchair Accessible Taxi ( Australia) |
| WAT | White Adipose Tissue |
| WAT | Waterford, Ireland (Airport Code) |
| WAT | Watch Dog Timer |
| WAT | Write Acceleration Technology |
| WAT | West Africa Time |
| WAT | Word Authoring Tool |
| WAT | Wireless Audio Transfer |
| WAT | Web Accessibility Tool |
| WAT | Web Authoring Tool |
| WAT | Weighted Average Tenor (investing) |
| WAT | Woordeboek van die Afrikaanse Taal (RSA) |
| WAT | We are Talented |
| WAT | Work Adjustment Training |
| WAT | Wafer Acceptance Test |
| WAT | Key West to Aruba to Trinidad (routing destination; US Navy) |
| WAT | Weight, Altitude, and Temperature (aviation) |
| WAT | Wax Appearance Temperature (petroleum industry, pipelines) |
| WAT | Website Administration Tool |
| WAT | Workshop on Agreement Technologies |
| WAT | Wheel and Track |
| WAT | Washington Accessible Taxi (King County, WA) |
| WAT | Wide Area Tandem |
| WAT | Weapons Augmentation Team (US Coast Guard) |
| WAT | Work Authorization Tracking |
| WAT | Wet Anode Tantalum |
| WAT | Wireless Action Team |