| Acronym | Definition |
|---|
| UISG➣User Interface Software Group |
| UISG➣Urban Information Systems Group |
| UISG➣University of Iowa Student Government |
| UISG➣Unione Internazionale Superiore Generali (Italian: International Union of Superiors General; Rome, Italy) |
| UISG➣Union Internationale des Sciences Géologiques |
| UISG➣Union of International Superiors General (Rome, Italy) |
| UISG➣Utility Industry Standards Group |