| 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| UPSI➣Unpublished Price Sensitive Information (India) |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 |