| Acronym | Definition |
|---|
| WTC | World Trade Center (New York) |
| WTC | World Trade Center (Sri Lanka-Colombo) |
| WTC | World Trade Center (Dubai) |
| WTC | Washington Technology Center |
| WTC | World Triathlon Corporation (Florida) |
| WTC | Well Tempered Clavier (J. S. Bach) |
| WTC | Whiting-Turner Contracting (Baltimore, MD) |
| WTC | Writing to Communicate (various schools) |
| WTC | Working Tax Credit |
| WTC | Wu Tang Clan |
| WTC | World Chase Tag (competition) |
| WTC | Water Treatment Chemical (various locations) |
| WTC | World Trade Center |
| WTC | World Touring Car |
| WTC | Web Tier Consolidation |
| WTC | Windows Terminal Controller |
| WTC | Wireless Telephony Client |
| WTC | Washington Toxics Coalition (Seattle, WA) |
| WTC | Western Texas College |
| WTC | World Technology Center (various locations) |
| WTC | Women's Timber Corps (UK) |
| WTC | Wind Turbine Company (Bellevue, WA) |
| WTC | Work Travel Company (various locations) |
| WTC | Work Training Center (various locations) |
| WTC | Women's Technology Cluster |
| WTC | Westchester Track Club (New York) |
| WTC | Winter Training Camp (various organizations) |
| WTC | What the Crap? |
| WTC | What's the Craic? (Irish Greeting) |
| WTC | Woodstock Theological Center (Georgetown University; Washington, DC) |
| WTC | Way Too Cool |
| WTC | Western Tube & Conduit (Long Beach, CA) |
| WTC | Wisconsin Technology Council (Madison, WI) |
| WTC | Worst Case Time Complexity (computer programming) |
| WTC | We Think Code (South Africa) |
| WTC | Wichita Technology Corporation (Wichita, KS) |
| WTC | Women's Travel Club |
| WTC | Wisconsin Track Club |
| WTC | World Thoroughbred Championships |
| WTC | Well Tempered Clavichord (J. S. Bach) |
| WTC | World Touring Championship |
| WTC | William Tyndale College (Farmington Hills, Michigan) |
| WTC | Want to Craft (World of Warcraft) |
| WTC | Way Too Cute |
| WTC | Wood Truss Council |
| WTC | Waste Treatment Complex |
| WTC | Wheat Trade Convention |
| WTC | Weirton Transit Corporation |
| WTC | Well Test Capture (Alberta Energy & Utilities Board) |
| WTC | Wound Treatment Center |
| WTC | Warfighter Technical Council (US Army) |
| WTC | Wallace Theater Corporation |
| WTC | Wilton Town Council |
| WTC | Working Time Calendar |
| WTC | Wilson Teachers College |
| WTC | Wall Thickness Control |
| WTC | Wave Train Catalog |
| WTC | World Telecommunications Conference |
| WTC | Chief Weapons Technician (Naval Rating) |