| Acronym | Definition |
|---|
| PTAS➣Pesetas (Spanish currency before January 1, 2002) |
| PTAS➣Polynomial-Time Approximation Scheme (theoretical computer science) |
| PTAS➣Patent and Trademark Assignment System |
| PTAS➣Pakistan Telecommunication Authority Standards |
| PTAS➣Passive Towed Array Sonar |
| PTAS➣Product-specific Technical Assisted Support |
| PTAS➣Policy, Training and Analysis Service (US Department of Education) |