| Acronym | Definition |
|---|
| UNI | University |
| UNI | University of Northern Iowa (Cedar Falls, IA) |
| UNI | University of Northern Iowa |
| UNI | Uniform |
| UNI | Universität |
| UNI | Universidad Nacional de Ingenieria (Spanish: National University of Engineering; Peru) |
| UNI | United News of India |
| UNI | Universidad Nacional de Ingeniería (Spanish: National University of Engineering; Peru) |
| UNI | User Network Interface |
| UNI | Unicycle |
| UNI | Unidirectional (ANSI) |
| UNI | Univision (Spanish-language TV channel) |
| UNI | Unitarian (Church) |
| UNI | Uniroyal (tire company) |
| UNI | Universidade Independente (Lisboa; Portugal) |
| UNI | Union Network International (international trade union organisation) |
| UNI | User to Network Interface |
| UNI | Universal Network Interface |
| UNI | Uninstaller |
| UNI | Union Nationale pour l'Independance (French: Union for National Independence, New Caledonia) |
| UNI | Usana Network International |
| UNI | Universitetet - Dr Byen (Danish railway station) |
| UNI | United Nuclear Industries |
| UNI | United Nurses International |
| UNI | Unity Railways Company |
| UNI | Unión Nacional Independiente (National Independent Union; Guatemala) |
| UNI | Ente Nationale Italiano di Unificazione (Italian standards body) |