| Surface Aviation Observation | Academic & Science |
| Smithsonian Astrophysics Observatory | Academic & Science |
| Student Activities Office | Academic & Science |
| Student Affairs Office | Academic & Science |
| Swinburne Astronomy Online | Academic & Science |
| Société des Antiquaires de l'Ouest | Academic & Science |
| Society of Antiquaries of the West | Academic & Science |
| Summer Academic Orientation | Academic & Science |
| Student Achievement Officer | Academic & Science |
| Société des Antiquaires de l'Ouest | Academic & Science |
| Senior Accounting Officer | Accounts and Finance |
| Stacy Adams Outdoors | Business |
| Situation Action Outcome | Business |
| Security Advisory Opinion | Business |
| State Audit Office | Business |
| State Accounting Office | Business |
| University of St, Andrews - 1 | Chemistry |
| Share An Opportunity | Community |
| Southern Association of Orthodontists | Community |
| Standard Adep Output | Computing |
| Single Association Object | Computing |
| Sator | Cryptocurrency |
| Session At Once | General |
| Special Agreements Officer | General |
| São Paulo | General |
| Sword Art Online | General |
| Stand As One | General |
| Sequential Approximate Optimization | General |
| Standard Application Online | General |
| Subject access office | General |
| Special Astrophysical Observatory | General |
| Shin Angyo Onshi | General |
| Smooth Approach Orifice | General |
| Standards Are Overrated | General |
| Safe Act Observation | General |
| Semi Annual Oscillation | General |
| Store Assortment Online | General |
| Shitty Add On | General |
| Stabilized Aqueous Ozone | General |
| Single Action Only | General |
| Sword Art Onlie | General |
| Stabilised Aqueous Ozone | General |
| South African Origin | General |
| State Auditor's Office | Governmental |
| Secret Agent Organization | Governmental |
| Stay Away Order | Governmental |
| Senior Administration Official | Governmental |
| SAGONI | Indian Railway Station |
| Sindicato de Acción Obrera | International |
| S*** Art Online | Internet |
| Salvation Army Officer | Jobs |
| Special Access Office | Military and Defence |
| Security Assistance Office/officer | Military and Defence |
| Selected Attack Option | Military and Defence |
| Staff Action Officer | Military and Defence |
| Survivor Assistance Officer | Military and Defence |
| Security Assistance Organization | Military and Defence |
| Sao Paulo, Sao Paulo, Brazil | Regional |
| Software Association of Oregon | Softwares |
| Smithsonian Astrophysical Observatory | Space Science |
