| 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) |