SNU
- List of airline codes (S)
- SNUS
- Seoul National University
- Service national universel
- Shaanxi Normal University
- Shenyang Normal University
- Shiv Nadar University
- Sigma Nu
- Skilled nursing unit
- Snus
- Solar neutrino unit
- Somali National University
- Southern Nazarene University
- Spiritualists' National Union
- Sunchon National University
- Viid language