UOS
- Franklin County Airport (Tennessee)
- Union of Salvation
- United Opposition of Serbia (1990)
- Unity Operating System
- University of Sahiwal
- University of Salford
- University of Sargodha
- University of Saskatchewan
- University of Seoul
- University of Sharjah
- University of Sheffield
- University of Sindh
- University of Southampton
- University of Stuttgart
- University of Suffolk
- University of Surrey
- University of Sussex