PGSI
| Acronym | Definition |
|---|---|
| PGSI | Problem Gambling Severity Index (social sciences) |
| PGSI | Polisportive Giovanili Salesiane International (Italian: International Salesian Youth Sports) |
| PGSI | Persatuan Gulat Seluruh Indonesia (Indonesian: All-Indonesian Wrestling Managers Association) |
| PGSI | Plate Glass and Shatterprufe Industries (South Africa) |