| Situs inversus | Situs inversus |
| Sity rights in the Low Countries | Stadsrechten |
| Sitzendorf an der Schmida | Sitzendorf an der Schmida |
| Siuntio | Siuntio |
| Sivalik Hills | Siwaliks |
| Sivan | Siewan |
| Sivan Perwer | Şivan Perwer |
| Sivapithecus | Sivapithecus |
| Sivas | Sivas |
| Sivas Province | Sivas |
| Sivasspor | Sivasspor |
| Siversk | Seversk |
| Siviriez | Siviriez |
| Sivlia | Sylvia |
| Siwa Oasis | Siwa |
| six | zes |
| Six articles of belief | Zuilen van geloof |
| Six day race | Zesdaagse |
| Six Day War | Zesdaagse Oorlog |
| Six Degrees of Separation | Zes niveaus van scheiding |
| Six Dynasties | Zes Dynastieën |
| Six Feet Under | Six Feet Under |
| Six flags over Texas | Six Flags Over Texas |
| six hundred | zeshonderd |
| Six Nations Championship | Zeslandentoernooi |
| Six Sigma | Zes sigma |
| Six-day racing | Zesdaagse |
| Six-Day War | Zesdaagse Oorlog |
| six-pack | kartonnetje met zes stuks |
| six-shooter | revolver met zes kamers |
| six-sided | zeszijdig |
| Six-spot Burnet | Sint-jansvlinder |
| Sixgill sawshark | Zeskieuwszaaghaai |
| sixteen | zestien |
| Sixteen Candles | Sixteen Candles |
| sixteenth | zestiende |
| sixteenth note | zestiende noot |
| sixth | zesde |
| Sixth Avenue | Sixth Avenue |
| Sixth Coalition | Zesde Coalitie |
| Sixth Crusade | Zesde Kruistocht |
| sixth sense | zesde zintuig |
| sixtieth | zestigste |
| sixty | zestig |
| sixty or so | zestigtal |
| sixty-eight | achtenzestig |
| sixty-first | eenenzestigste |
| sixty-five | vijfenzestig |
| sixty-four | vierenzestig |
| sixty-nine | negenenzestig |
| sixty-one | eenenzestig |
| sixty-seven | zevenenzestig |
| sixty-six | zesenzestig |
| sixty-three | drieënzestig |
| sixty-two | tweeënzestig |
| sizable | aanzienlijk |
| size | omvang |
| Size exclusion chromatography | Gel Permeatie Chromatografie |
| size up the situation | poolshoogte nemen |
| sizeable | aanzienlijk |
| Sizzla | Sizzla |
| sizzle | sissen |
| Sizzle cymbal | Sizzler |
| sizzler | snikhete dag |
| Siége Perilous | Siege Perilous |
| Sió | Sió |
| Siófok | Siófok |
| Siġġiewi | Siġġiewi |
