UPSI
| Acronym | Definition |
|---|---|
| UPSI | Universiti Pendidikan Sultan Idris |
| UPSI | Unpublished Price Sensitive Information (India) |
| UPSI | Unprotected Sexual Intercourse |
| UPSI | Universal Power Systems Inc |
| UPSI | Universities Police Science Institute (Wales) |
| UPSI | United Property Services, Inc. (Exton, Pennsylvania) |
| UPSI | Unique Power Systems, Inc. (Tacoma, WA) |
| UPSI | Ultimate Power Sales Inc. |
| UPSI | User Program Status Indicator |
| UPSI | Universal Power Systems, Incorporated |
| UPSI | Un-Interruptible Power System Interface |