| Six Feet Under | Six Feet Under |
| six hundred | seicento |
| Six major Hadith collections | Sei libri |
| Six Nations Championship | Sei Nazioni |
| six of one, half a dozen of the other | se non è zuppa, è pan bagnato |
| Six Sigma | Sei Sigma |
| six thousand | seimila |
| Six-day racing | Bicicletta da pista |
| Six-Day War | Guerra dei sei giorni |
| six-pack | confezione da sei |
| six-shooter | revolver a sei colpi |
| six-sided | esagonale |
| sixfold | sestuplo |
| sixteen | sedici |
| Sixteen Kingdoms | I sedici regni |
| sixteenth | sedicesimo |
| Sixteenth dynasty of Egypt | XVI dinastia egizia |
| sixteenth note | semicroma |
| sixth | sesto |
| Sixth Column | Sesta colonna |
| Sixth Crusade | Sesta crociata |
| Sixth dynasty of Egypt | VI dinastia egizia |
| sixth form | quinta superiore |
| sixth sense | sesto senso |
| sixtieth | sessantesimo |
| Sixtus | Sesta maggiore |
| sixty | sessanta |
| Sixty minutes | Ora |
| sixty or so | sessantina |
| sixty-eight | sessantotto |
| sixty-first | sessantunesimo |
| sixty-five | sessantacinque |
| sixty-four | sessantaquattro |
| sixty-nine | sessantanove |
| sixty-one | sessantuno |
| sixty-second | sessantaduesimo |
| sixty-seven | sessantasette |
| sixty-six | sessantasei |
| sixty-three | sessantatré |
| sixty-two | sessantadue |
| sizable | considerevole |
| size | dimensione |
| Size exclusion chromatography | Cromatografia a permeazione di gel |
| Size in collars | Incollatura |
| size of shoe | numero di scarpa |
| size up the situation | valutare la situazione |
| sizeable | considerevole |
| sizing | apprettatura |
| sizzle | friggere |
| Sizzle cymbal | Piatto Sizzle |
| sizzler | giornata torrida |
| Siége Perilous | Siege Perilous |
| Sió | Sió |
| Siófok | Siófok |
| Siġġiewi | Suggeui |
| SJ | SJ |
| SJ AB | SJ |
| Sjenica | Sjenica |
| Sjón | Sjón |
| Sjöfn | Sjöfn |
| SK | SK |
| SK Austria Kärnten | SK Austria Kärnten |
| SK Dynamo České Budějovice | Dynamo České Budějovice |
| SK Kladno | SK Kladno |
| SK Rapid Wien | Rapid Vienna |
| SK Sigma Olomouc | Sigma Olomouc |
| SK Slavia Prague | Slavia Praga |
| SK Slavia Praha | Slavia Praga |
| SK Sturm Graz | Sturm Graz |
| SK Tirana | SK Tirana |
| Ska punk | Ska punk |
| Ska-P | Ska-P |
| Skadarlija | Skadarlija |
| Skagafjörður Municipality | Skagafjörður |
| Skagen | Skagen |
| Skagerrak | Skagerrak |
| Skagway | Skagway |
| Skala Oropou | Skala Oropou |
| Skaldic poetry | Poesia scaldica |
| Skalica | Distretto di Skalica |
| Skalica District | Distretto di Skalica |
| Skalité | Skalité |
| Skalka nad Váhom | Skalka nad Váhom |
| Skanderbeg | Giorgio Castriota Scanderbeg |
| Skanderborg | Skanderborg |
| Skanderborg municipality | Skanderborg |
| skandha | aggregato |
| Skara | Skara |
| Skara Brae | Skara Brae |
| Skara Municipality | Skara |
| Skarlet | Skarlet |
| Skarnsundet | Skarnsundet |
| Skarsterlân | Skarsterlân |
| skate | pattinare |
| Skate punk | Skate punk |
| skateboard | skateboard |
| Skateboarding trick | Skateboarding trick |
| skater | pattinatore |
| Skathi | Skathi |
| skating | pattinaggio artistico |
| skating ring | pista di ghiaccio |
| skating rink | pista di pattinaggio |
| Skating with Celebrities | Notti sul ghiaccio |
| Skaun | Skaun |
| Skaði | Skaði |
| Skała | Roccia |
| skedaddle | scappare |
| Skedsmo | Skedsmo |
| skeet shooting | tiro al piattello |
| skeg | dragante |
| Skeid Fotball | Skeid Fotball |
| skein | stormo |
| skeins | capestri |
| skeletal | scheletrico |
| skeleton | ossatura |
| Skeleton Coast | Skeleton Coast |
