| School and College Ability Test | Academic & Science |
| Student Community Action Team | Academic & Science |
| Southern Crossing Air Transport | Business |
| Scooping Committee For Anchorage Trails | Community |
| School Christian Assembly Team | Community |
| Shoreline Cleanup Assessment Team | Community |
| Somerville Community Access Television | Community |
| Searching Catalogs To Access Titles | Community |
| Somerset College of Arts and Technology | Computing |
| Single Chip at | Computing |
| Special Computerized Attack Team | Computing |
| Scholastic and College Ability Test | Educational Institute |
| Sneak Circuit Analysis Tool | Electronics |
| St Charles Area Transit | General |
| Scatsouth Central Arkansas Transit | General |
| Specialized Crimes Action Team | General |
| Supersonic Commercial Air Transport | General |
| Special Control Attack Team | General |
| Stroke Count at Time | General |
| Springfield City Area Transit | General |
| Space Coast Area Transit | General |
| Smart Controls and Adaptive Thermal | General |
| Shoreline Cleanup and Assessment Technique | General |
| Special Casualty Access Team | General |
| Springfield Cit Area Transit | General |
| Systematic Causal Analysis Technique | General |
| Systemic Causal Analysis Technique | General |
| Standardized Concussion Assessment Tool | General |
| Societa Ceirano Automobili Torino | General |
| Secondary Conversion Addressability Tiering | General |
| Seismic Charting And Testing | General |
| Street Crimes Arrest Team | General |
| Subject Control Arrest Technique | General |
| Stroke Count And Timing | General |
| Special Cargo Air Transport | General |
| Small Craft Attack Team | General |
| Societa Costruzione Automobili Torino | General |
| Shelby Cobra Association of Texas | General |
| Scrap Ceramic-Cores of Automotive Catalytic Converter | General |
| Safe Courteous Attentive And Ticketless | General |
| Southern Crescent Aquatic Team | General |
| Sensation Colour Amount And Texture | General |
| Suffolk County Accessible Transit | Governmental |
| Specialized Crime Action Team | Governmental |
| Suffolk County Accessible Transportation | Governmental |
| Senior Citizens Affordable Taxi | Governmental |
| Seneca County Agency Transportation | Governmental |
| Senior Center Adult Transportation | Governmental |
| South Central Arkansas Transportation | Governmental |
| Seneca Crawford Area Transportation | Governmental |
| Street Crime Apprehension Team | Governmental |
| Stop Child Abduction Today | Governmental |
| Specialized Community Area Transit | Governmental |
| Specialized Community Area Transportation | Governmental |
| South County Area Transit | Governmental |
| Strathcona County Accessible Transit | Governmental |
| Sarasota County Area Transit | Regional |
| Solar Composting Advanced Toilet | Space Science |
| Space Communication and Tracking | Space Science |
| Storage, Checkout, and Transport | Space Science |
| Sport Competition Anxiety Test | Sports |
| Sport Concussion Assessment Tool | Sports |
| Southern California Aerobatic Team | Sports |
| Sports Concussion Assessment Tool | Sports |
| Single Channel Autonomous Trunking | Telecommunication |