| Abbreviation | Definition |
|---|---|
| UGK | Upgrade Kit |
| UGM | Ultimate Gaming Machine |
| UHC | Utrecht Haskell Compiler |
| UHO | Ultimate Home Office |
| UIC | Universally Interoperable Core |
| UIC | User Interface Compiler |
| UID | User Interface Definition |
| UIDS | Unique Identifiers |
| UIE | User Interface Engine |
| UIL | User Interface Language |
| UIM | Unix Image Manager |
| UIM | User Interface Manager |
| UIMS | User Interface Management System |
| UIOP | UI Image Overhaul Project |
| UIP | User Interface Program |
| UIQ | User Interface for Quartz |
| UISD | IIS Anti-leech Sniffer Dog |
| UISE | Union of Iranian Software Exporters |
| UISE | User Interface Software Engineering |
| UIST | User Interface Software and |