| Sirous | Sirous |
| sirsacas | seersucker |
| Sirtaki | Sirtaki |
| Sirtuine | Sir |
| sirupeux | treacly |
| Sirvente | Sirventes |
| sirène | mermaid |
| Sirène lacertine | Greater Siren |
| Sirènes | Siren |
| Sisak | Sisak |
| sisal | sisal |
| Sise | Recumbently |
| Sisebuth | Sisebut |
| Siselen | Siselen |
| Sisian | Sisian |
| Sisikon | Sisikon |
| Sisinnius | Pope Sisinnius |
| Sisley Trévise | Sisley Volley Treviso |
| SISMI | SISMI |
| sismique | seismic |
| sismogramme | seismogram |
| sismographe | seismograph |
| sismologie | seismology |
| Sismologie solaire | Solar seismology |
| Sismologie stellaire | Stellar seismology |
| Sisowath | Sisowath of Cambodia |
| Sissach | Sissach |
| Sisseln | Sisseln |
| Sissi face à son destin | Sissi - Schicksalsjahre einer Kaiserin |
| Sissili | Sissili |
| Sissy Spacek | Sissy Spacek |
| Sistan-o-Balouchestan | Sistan and Baluchestan Province |
| Sister Act | Sister Act |
| Sister Cities International | Sister Cities International |
| sister-ship | sister ship |
| Sisteron | Sisteron |
| Sisto Badalocchio | Sisto Badalocchio |
| sistre | sistrum |
| Sisu | Sisu |
| Siswati | Swati language |
| Sisygambis | Sisygambis |
| Sisymbre | Sisymbrium |
| Sisyphe | Sisyphus |
| Sisyrinchium | Blue-eyed grass |
| sit-in | sit-in |
| Sita Vermeulen | Sita |
| sitar | sitar |
| Sitation état condition | State |
| Sitatunga | Sitatunga |
| Sitcom | Situation comedy |
| site | site |
| site abandonné | abandoned industrial site |
| Site actif | Active site |
| site ancien dangereux | old hazardous site |
| site archéologique | archaeological site |
| Site archéologique de Calçoene | Calçoene |
| Site archéologique de Carthage | Carthage |
| Site Clovis | Clovis culture |
| Site de Deir el-Bahari | Deir el-Bahri |
| site de patrimoine mondial | world heritage site |
| Site de rencontres | Online dating service |
| Site des premiers hommes de Sangiran | Sangiran |
| Site Forum | On-topic |
| Site fossilifère de Messel | Messel pit |
| site historique | historical site |
| site industriel | industrial site |
| site inscrit | registered site |
| site Internet | web site |
| Site miroir | Mirror |
| site naturel | natural scenery |
| site naturel protégé | protected landscape |
| Site nucléaire de Brennilis | Brennilis Nuclear Power Plant |
| Site nucléaire de Marcoule | Marcoule |
| site pollué | polluted site |
| site Web | web site |
| Sites de restriction | Restriction sites |
| Sith | Sith |
| Sith Infiltrator | Sith Infiltrator |
| Sitta pusilla | Brown-headed Nuthatch |
| Sitta pygmaea | Pygmy Nuthatch |
| Sittang | Sittang River |
| Sittelle corse | Corsican Nuthatch |
| Sittelle de Neumayer | Western Rock Nuthatch |
| Sitting Bull | Sitting Bull |
