TSTA
| Acronym | Definition |
|---|---|
| TSTA | Texas State Teachers Association |
| TSTA | Teaching and Supervising Transactional Analyst (counseling) |
| TSTA | Tritium Systems Test Assembly |
| TSTA | Two-Step Transcriptional Activation (gene therapy) |
| TSTA | Tailored Ships Training Availability |
| TSTA | Technology Security Technical Assessment |
| TSTA | Tri-State Telecommunications Association |
| TSTA | Too Small To Adjust (accounting) |