| Acronym | Definition |
|---|
| WTTC | World Travel and Tourism Council |
| WTTC | Welcome To The Club |
| WTTC | World Table Tennis Championships |
| WTTC | West Texas Training Center (San Angelo, Texas) |
| WTTC | World Tag Team Champions (WWE Raw) |
| WTTC | Wolverhampton-Telford Technology Corridor (UK) |
| WTTC | When the Time Comes |
| WTTC | Werkstoffe Technologien Transfer Consulting (Germany) |
| WTTC | Welcome To The City, Inc. (Toronto, Canada) |
| WTTC | Wichita Toy Train Club (Wichita, KS) |
| WTTC | Workshop on Targetry and Target Chemistry |
| WTTC | West Texas Telecommunications Consortium |
| WTTC | White Trash Triple Crown |
| WTTC | Waiting to Try to Conceive |
| WTTC | Wyoming Technology Transfer Center |
| WTTC | World Telephone and Telegraph Conference |
| WTTC | West Tennessee Telephone Company, Inc. (Bradford, TN) |
| WTTC | Wheelchair Technologists Training Course (Tanzania) |
| WTTC | Worker Training Tax Credit |
| WTTC | Washington Table Tennis Center (Bellevue, WA) |
| WTTC | Workshop on Trends, Technologies, and Collaborative Opportunities in High Performance and Grid Computing |
| WTTC | Wharton Table Tennis Club |
| WTTC | Wellcome Trust Tropical Centre (UK) |
| WTTC | Water Treatment Technology Center |
| WTTC | Walk Through the Twentieth Century (Bill Moyers series) |
| WTTC | World Time Travel Calculator |
| WTTC | Winschoter Tafel Tennis Club (Netherlands) |
| WTTC | Women Technical Training Centre |
| WTTC | Wind Tunnel Technical Center |
| WTTC | Whitehall Township Tooling Coalition (Michigan) |
| WTTC | Washington Tribal Transportation Consortium (Washington state) |
| WTTC | WorldCom Technical Training Center |
| WTTC | Waterworks Technology Training Center (Japan) |