| Acronym | Definition |
|---|
| WTTA | Washington Tow Truck Association |
| WTTA | Women's Team Tennis of Austin (Texas) |
| WTTA | Woking Town Twinning Association |
| WTTA | Western Time Trials Association |
| WTTA | Who Took Title As (legal documents) |
| WTTA | Wynnum Table Tennis Association |
| WTTA | West Texas Transportation Alliance |
| WTTA | Wellington Teacher Trainees’ Association |
| WTTA | Werribee Table Tennis Association |
| WTTA | Wholesale Tobacco Trade Association (now defunct; UK) |
| WTTA | West Tennessee Transplant Association |
| WTTA | West Texas Teachers Association |
| WTTA | Winning Techniques Training Academy |
| WTTA | World Table Tennis Association |