| Stratospheric Indicator Of Climate Changes | Academic & Science |
| Sydney Independent Catholic Colleges | Academic & Science |
| Student Involvement and Career Center | Business |
| Staten Island Community Center | Community |
| Singapore Island Country Club | Community |
| Saskatchewan Indian Cultural Centre | Community |
| Staten Island Creative Community | Community |
| Securities Identification Code Committee | Community |
| Saskatchewan Indigenous Cultural Centre | Community |
| Southern Invitational Choral Conference | Community |
| Saskatchewan Indian Cultural Centres | Community |
| Southern Intermediate Care Centre | General |
| Scuderia Italian Car Club | General |
| Shankars International Childrens Competition | General |
| Servicio De Intercambio Centralizado De Correspondencia | General |
| Singapore Indian Chinese Cohort | General |
| Swiss Indian Chamber of Commerce | Governmental |
| Statewide Interagency Coordinating Council | Governmental |
| Somerset In Care Council | Governmental |
| Safeguard Inventory Control Center | Governmental |
| Service Item Control Center | Governmental |
| State Interagency Coordinating Council | Governmental |
| Scotiabank International Case Competition | International |
| Sentul International Convention Center | International |
| Singapore International Commercial Court | International |
| Sabah International Convention Centre | International |
| Singapore International Chamber of Commerce | International |
| Siamese Internet Cat Club | Internet |
| Surgically Inserted Central Catheter | Medical |
