WTSA
| Acronym | Definition |
|---|---|
| WTSA | Westbound Transpacific Stabilization Agreement (shipping) |
| WTSA | Western Thoracic Surgical Association (Beverly, MA) |
| WTSA | World Telecommunications Standardization Assembly |
| WTSA | Western Textile Services Association (est. 1911) |
| WTSA | World Table Soccer Association |
| WTSA | Seaman Apprentice, Weapons Technician Striker (Naval Rating) |