| 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) |