S
- Sacramento State/Sac State - California State University, Sacramento
- SC - University of Southern California, University of South Carolina
- SCU - Santa Clara University
- SCSU - South Carolina State University, Southern Connecticut State University
- SDSM&T - South Dakota School of Mines and Technology
- SDSU - South Dakota State University, San Diego State University
- SFSU - San Francisco State University
- SEMo - Southeast Missouri State University
- Sewanee - University of the South
- SHC - Spring Hill College
- SIU, SIUC - Southern Illinois University Carbondale
- SIUE - Southern Illinois University Edwardsville
- SJC - St. John's College
- SJFC - St. John Fisher College
- SJSU - San Jose State University
- SJU - Saint Joseph's University, St. John's University (NY)
- SLU - Saint Louis University, St. Lawrence University
- SMC - St. Mary's College (CA)
- SMU - Southern Methodist University
- SOSU - Southeastern Oklahoma State University
- SPU - Seattle Pacific University
- SRU - Slippery Rock University of Pennsylvania
- Stanislaus State/Stan State -California State University, Stanislaus
- SSU - Savannah State University, California State University, Sonoma
- State - any of various state universities
- SU - Shenandoah University, Southern University, Stanford University, Susquehanna University, Syracuse University
- SUU - Southern Utah University
- SUNY - State University of New York system
Read more about this topic: List Of Colloquial Names For Universities And Colleges In The United States