- CSUC (California State University Chico)
- CSUD (California State University, Dominguez Hills)
- CSUE (Communications for Subterranean and Urban Environments)
- CSUF (Central State University Foundation)
- CSUG (Canadian Society for Unconventional Gas)
- CSUGA (Connecticut State University Grant Aid)
- CSUGC (Colorado State University-Global Campus)
- CSUH (California State University, Hayward)
- CSUI (California State University, Channel Islands)
- CSUK (Chea Sim University of Kamchaymear)
- CSUL (Computer Supported Ubiquitous Learning)
- CSULB (California State University, Long Beach)
- CSUMB (California State University Monterey Bay)
- CSUMB-QRP (California State University Monterey Bay - Queretaro Research Project)
- CSUN (California State University Northridge)
- CSUO (Cadet Senior UnderOfficer)
- CSUP (California State University, Pomona (now California State Polytechnic University, Pomona))
- CSUQ (Communaute Sepharade Unifiee du Quebec)
- CSUR (Computing SURvey)
- CSURG (Chief Surgeon)
- CSUS (California State University, Sacramento)
- CSUSB (California State University, San Bernardino)
- CSUSM (California State University, San Marcos)
- CSUSTAN (California State University, Stanislaus)
- CSUT (Christian Students at University of Texas)
- CSUW (Computer Science, University of Washington)
- CSV (Crossville Memorial-Whitson Field)
- C.S.V. (Clerici Sancti Viatoris (Clerks, or Clerics, of St. Viateur))
