| Abbreviation | Definition |
|---|---|
| UNMUHA | Universitas Muhammadiyah Aceh (Indonesia) |
| UNN | University Neighborhood Network |
| UNN | University News Network |
| UNN | University of Nigeria Nsukka |
| UNN | University of Nigeria, Nsukka |
| UNN | University of Nizhni Novgorod |
| UNN | University of Northumbria at Newcastle |
| UNNA | United Network of Newton Archives |
| UNNC | University of Nottingham Ningbo China |
| UNO | University of Nebraska - Omaha |
| UNO | University of Nebraska at Omaha |
| UNO | University of Nebraska Omaha |
| UNO | University of New Orleans |
| UNO | University of NO Opportunity |
| UNO | University of Northwestern Ohio |
| UNOB | Univerzita Národní Obrany v Brn |
| UNOB | Univerzita Národní Obrany v Brne |
| UNOB | Univerzita Národní Obrany v Brně |
| UNOH | University of Northwestern Ohio |
| UNOPAR | Universidade Norte do Paraná |