| Acronym | Definition |
|---|
| THSA➣Theatre Historical Society of America (est. 1969; Elmhurst, IL) |
| THSA➣Trimmable Horizontal Stabilizer Actuator |
| THSA➣Texas Head Start Association (est. 1965; Victoria, TX) |
| THSA➣Turkey Head Sailing Association (Victoria, British Columbia, Canada) |
| THSA➣The Han Solo Adventures (Star Wars) |
| THSA➣Texas Historic Sites Atlas |