| Acronym | Definition |
|---|
| UNN | University News Network |
| UNN | Universitetssykehuset Nord-Norge (Norwegian: University Hospital North Norway) |
| UNN | University of Nigeria, Nsukka (Enugu, Nigeria) |
| UNN | Underground News Network |
| UNN | Unallocated National Number |
| UNN | University Neighborhood Network |
| UNN | University of Northumbria at Newcastle (UK) |
| UNN | University of Nizhny Novgorod (Russia) |
| UNN | University Neighborhood Network (Center for Urban and Regional Affairs; University of Minnesota; Minneapolis, MN) |
| UNN | Usayd Network News (blog) |
| UNN | Unnilnovium (meitnerium, element 109) |