| Acronym | Definition |
|---|
| NSU | Nova Southeastern University |
| NSU | Norfolk State University |
| NSU | Northeastern State University (Oklahoma) |
| NSU | North South University (Bangladesh) |
| NSU | Northwestern State University |
| NSU | Novosibirsk State University (Novosibirsk, Russia) |
| NSU | Nokia Software Updater |
| NSU | Northern State University (Aberdeen, South Dakota) |
| NSU | Neckarsulm (German Car and Motorcycle Manufacturer) |
| NSU | Nicholls State University (Thibodaux, La, USA) |
| NSU | Non-Specific Urethritis |
| NSU | Networking Support Utilities |
| NSU | Neckar S Ulm |
| NSU | Naval Support Unit (US Navy) |
| NSU | New School University (New York, NY) |
| NSU | Non-Sport Update |
| NSU | New Soviet Union (various meanings) |
| NSU | Nationalist Socialist Underground (political group) |
| NSU | National Surveillance Unit |
| NSU | Nikkei Student Union |
| NSU | Navy Service Uniform (US Navy) |
| NSU | National Student Union |
| NSU | Naval Scout Unit (US Navy) |
| NSU | Network Synchronization Unit |
| NSU | Node Switching Unit |
| NSU | Neighborhood Stabilization Unit |
| NSU | Network Switching Unit |
| NSU | Network Service/Interface Unit |