CUS
- Cambridge Union Society
- Canadian Union of Students
- Catholic University School
- Centro Universitario Sportivo Italiano
- Chicago Union Station
- Commonwealth of Unrecognized States
- Computer user satisfaction
- Concordia University System
- Confederation of Labour Unification
- Constitution of the United States
- Copper monosulfide
- Critical university studies
- Cus D'Amato
- Cuss (disambiguation)
- Custom House station
- Kus (disambiguation)
- Norther (band)
- Urban Community of Strasbourg