| sradicare | eradicate |
| Sragionamento | Silly thing |
| SRAM | Static random access memory |
| Srbobran | Srbobran |
| Srebrenica | Srebrenica |
| Srednekolymsk | Srednekolymsk |
| Srednji Salaš | Srednji Salaš |
| sregolatezza | binge |
| sregolato | lawless |
| Sremska Mitrovica | Sremska Mitrovica |
| Sremski Karlovci | Sremski Karlovci |
| Srečko Katanec | Srečko Katanec |
| Srečko Kosovel | Srečko Kosovel |
| Sri Aurobindo | Sri Aurobindo |
| Sri Jayewardanapura Kotte | Sri Jayawardenepura Kotte |
| Sri Lanka | Sri Lanka |
| Srinagar | Srinagar |
| Srinivasa Ramanujan | Srinivasa Ramanujan |
| Srotolamento del loop | Loop unwinding |
| srotolare | roll out |
| Srđan Dragojević | Srđan Dragojević |
| SS | Sassari |
| SS Germaniche | Germanic-SS |
| SS Savannah | SS Savannah |
| SS United States | SS United States |
| SS- und Polizeiführer | SS and Police Leader |
| SS-Ehrenring | SS-Ehrenring |
| SS-Junkerschule | Junker |
| SS-Totenkopfverbände | SS-Totenkopfverbände |
| SsangYong Motor Company | SsangYong Motor Company |
| SSC Aero | SSC Aero |
| Sse | If and only if |
| SSH file transfer protocol | SSH file transfer protocol |
| Ssirûm | Ssireum |
| SSME | Space Shuttle main engine |
| SSR | SSR |
| SSRI | Selective serotonin reuptake inhibitor |
| sss | shush |
| st | shush |
| St Albans | St Albans |
| St Edmundsbury | St Edmundsbury |
| sta | is |
| Staaken | Staaken |
| Staatliche Antikensammlungen | Staatliche Antikensammlungen |
| Staatsbibliothek Unter den Linden | Berlin State Library |
| Staatsoper | Vienna State Opera |
| Staatsoper Unter den Linden | Berlin State Opera |
| Staatz | Staatz |
| Stabat Mater | Stabat Mater |
| Stabiae | Stabiae |
| stabile | fixed |
