PSTU
| Acronym | Definition |
|---|---|
| PSTU | Partido Socialista Dos Trabalhadores Unificado (Portuguese: Unified Workers Socialist Party) |
| PSTU | Perm State Technical University (Russia) |
| PSTU | Potti Sreeramulu Telugu University (India) |
| PSTU | Patuakhali Science and Technology University (Bangladesh) |