| Students Thinking Across the Curriculum | Academic & Science |
| Student Trial Advocacy Competition | Academic & Science |
| Student Theatre Arts Complex | Academic & Science |
| Stearyl Trimethyl Ammonium Chloride | Academic & Science |
| Students Taking Action for Change | Academic & Science |
| St Thomas The Apostle College | Academic & Science |
| St Thomas Aquinas College | Academic & Science |
| Science Technology And Culture | Academic & Science |
| Skills, Talents, Abilities, and Characteristics | Business |
| Salmon And Trout Advisory Committee | Business |
| Saskatchewan Triathlon Association Corporation | Business |
| Scientific And Technical Advisory Committee | Business |
| Second Tier Advisory Committee | Business |
| Stac Software, Inc. | Business |
| Send To A Colleague | Business |
| System to Track and Account for Children | Community |
| Sectional Tournaments at Clubs | Community |
| Sanford Third Age Club | Community |
| Stafford Township Arts Center | Community |
| Student Teacher Activity Committee | Community |
| Scottish Technology And Collaboration | Computing |
| Stacstate Technologies Advancement Collaborative | Computing |
| State Technologies Advancement Collaborative | Computing |
| Sionscience And Technology Advisory Committee | Computing |
| Student Technology Assistance Center | Computing |
| Software Testing Atlanta Conference | Computing |
| Structured Activity Compensation | Computing |
| Standards Based Encryption Compression | Computing |
| StarterCoin | Cryptocurrency |
| Scientific And Technological Activities Commission | General |
| Star Trek Alpha Command | General |
| Space Time Analysis for Cybersecurity | General |
| Shanghai Tractor Automobile Corporation | General |
| Sindicat del Taxi de Catalunya | General |
| Steelworker Toronto Area Council | Governmental |
| Submerged Tactical Assault Craft | Governmental |
| Stacspecial Transportation Advisory Committee | Governmental |
| State Training Advisory Council | Governmental |
| Shuttle Task Activation Contractor | Governmental |
| Statewide Transportation Advisory Committee | Governmental |
| Standard Traffic Agents Code | Governmental |
| Statistical Temporal Analysis of Crime | Governmental |
| Science and Technology Advisory Council | Governmental |
| Scientific and Technical Advice Cell | Medical |
| Single Track Around Canberra | Sports |
| Sectional Tournament At Club | Sports |
| St. Thomas Adventure Club | Sports |
| Southern Tier Athletic Conference | Sports |
| Sectional Tournament At Clubs | Sports |
