| Skylab | Skylab |
| Skynet | Skynet |
| Skype | Skype |
| Skyros | Esciro |
| SkyTeam | SkyTeam |
| Skáldskaparmál | Skáldskaparmál |
| Skínfaxi e Hrímfaxi | Skinfaxi y Hrímfaxi |
| Skírnismál | Skírnismál |
| Skíðblaðnir | Skíðblaðnir |
| Sköll | Skoll |
| Skövde | Skövde |
| SL | SL |
| SL Benfica | Sport Lisboa e Benfica |
| Slaanesh | Slaanesh |
| slacciare | desatar |
| Slackware | Slackware |
| slalom | eslalon |
| Slalom speciale | Eslálom |
| slanciare | lanzar |
| slancio | arrebato |
| slang | jerga |
| Slapping | Slap |
| Slapstick | Slapstick |
| Slash | Slash |
| Slasher | Slasher |
| slava | eslava |
| Slave I | Esclavo I |
| Slavi | Pueblo eslavo |
| Slavia Praga | Slavia Praga |
| slavina | avalancha |
| slavismo | eslavismo |
| slavo | eslavo |
| Slavo ecclesiastico | Eslavo eclesiástico |
| Slavoj Žižek | Slavoj Žižek |
| Slavonia | Eslavonia |
| SLAX | SLAX |
| Slayer | Slayer |
| SLBM | SLBM |
| sleale | desafecto |
| slealtà | deslealtad |
| Sleeping with Ghosts | Sleeping With Ghosts |
| slegare | desatar |
| slegarsi | soltarse |
| slegato | incoherente |
| Sleipnir | Sleipnir |
| Slesia | Silesia |
| Slesia ceca | Silesia |
| Sleuth - Gli insospettabili | La huella |
| Slevin - Patto criminale | El caso Slevin |
| Slew rate | Slew rate |
| Sliabh Liag | Slieve League |
| slick | neumático liso |
| Sligo | Condado de Sligo |
| Sligo Rovers | Sligo Rovers Football Club |
| slinguare | besuquearse |
| slinguata | beso francés |
| slip | slip |
| slitta | trineo |
| slittare | resbalar |
| Sliver | Sliver |
| Sliver - The Best of the Box | Sliver - The Best of the Box |
| Slivovitz | Slivovitz |
| Sloan | Sloan |
| Slobodan Milošević | Slobodan Milošević |
| Slobodan Rajković | Slobodan Rajković |
| slogamento | dislocación |
| slogan | slogan |
| Slogan pubblicitari | Eslóganes |
| slogare | dislocarse |
| slogarsi | dislocarse |
| slogatura | dislocación |
| sloggiare | desalojar |
| sloop | corbeta |
| Slot car | Slot |
| slot-machine | máquina tragamonedas |
| slovacca | eslovaco |
| Slovacchia | Eslovaquia |
| slovacco | eslovaco |
| Slovan Bratislava | Slovan Bratislava |
| Slovan Liberec | FC Slovan Liberec |
| slovena | eslovena |
| Slovenia | Eslovenia |
| Slovenia centrale | Osrednjeslovenska |
| Slovenia sudorientale | Jugovzhodna Slovenija |
| Slovenj Gradec | Slovenj Gradec |
| sloveno | esloveno |
| Slovio | Slovio |
| Slow-start | Slow-start |
| Slowking | Slowking |
| Sludge metal | Sludge metal |
| slum | barrio bajo |
| slump | depresión |
| SM Caen | Stade Malherbe Caen Calvados Basse-Normandie |
| smagliare | desenredar |
| smagliatura | carrerilla |
| smagnetizzare | desimantar |
| Smalcalda | Esmalcalda |
| Small Computer System Interface | Small Computer System Interface |
