| Southern Counties Archery Society | Academic & Science |
| South Carolina Autism Society | Academic & Science |
| Sonoma County Astronomical Society | Academic & Science |
| Southern California Academy of Sciences | Academic & Science |
| Swiss Center for Affective Sciences | Academic & Science |
| Science Calibration And Alignment Subsystem | Academic & Science |
| Southern Cross Astronomical Society | Academic & Science |
| Spatial Climate Analysis Service | Academic & Science |
| South Carolina Academy of Science | Academic & Science |
| Southern Colorado Astronomical Society | Academic & Science |
| Spartan Crusade for Academic Success | Academic & Science |
| South Central Ambulance Service | Business |
| Small Claims Advisory Service | Business |
| School of Career and Applied Studies | Community |
| Social, Cultural, Arts, and Self | Community |
| Schools Computer Administration Service | Computing |
| Scan String | Computing |
| Site Central Authorization Service | General |
| Self Certifying Alerts Security | General |
| Scarborough Centre for Alternative Studies | General |
| Spence Children's Anxiety Scale | General |
| Swedish Collegium for Advanced Study | General |
| Side Collision Avoidance Systems | General |
| Society For Comapnion Animal Studies | General |
| Security Card Access System | General |
| Semi Continuous Activated Sludge | General |
| Securities Class Action Services | General |
| Stability Control Augmentation System | Governmental |
| Serious Crime Analysis Section | Governmental |
| Subsystem Computer Application Software | Governmental |
| Stability Control Augment System | Governmental |
| Sigur Center for Asian Studies | International |
| Super Cool And Special | Internet |
| Society for Companion Animal Studies | Medical |
| Sacramento County Airport System | Regional |
