| signifier | indicar |
| Signy-Avenex | Signy-Avenex |
| Sigourney Weaver | Sigourney Weaver |
| Sigrid Undset | Sigrid Undset |
| Sigriswil | Sigriswil |
| Sigtuna | Sigtuna |
| Sigur Rós | Sigur Rós |
| Sigurd Ier de Norvège | Sigurd I |
| Sigurd II de Norvège | Sigurd II |
| Sigurd Wongraven | Sigurd Wongraven |
| Sigurdur Nordal | Sigurður Nordal |
| Sigurimi | Sigurimi |
| Sigurjón Birgir Sigurðsson | Sigurjón Birgir Sigurðsson |
| Sigvard de Suède | Sigvard Bernadotte |
| Sigyn | Sigyn |
| Sigéric | Sigerico |
| Sigéric de Cantorbéry | Sigerico el Serio |
| Sihanoukville | Ciudad de Sihanoukville |
| Siirt | Provincia de Siirt |
| sikh | sij |
| sikhisme | sijismo |
| Sikhote-Aline | Sijote-Alin |
| Sikkim | Sikkim |
| Sikorsky Aircraft Corporation | Sikorsky Aircraft |
| Siku | Sicu |
| SIL International | SIL International |
| Silane | Silano |
| Silat | Pencak silat |
| Silbo | Silbo gomero |
| silence | secreto |
| silencieusement | tranquilo |
| silencieux | silenciador |
| Silenen | Silenen |
| Silent Hill | Silent Hill |
| Silent Running | Naves misteriosas |
| silex | pedernal |
| silhouette | figura |
| silhouette replète | corpulento |
| silicate | silicato |
| silice | sílice |
| silicium | silicio |
| Silicium sur isolant | Silicon on insulator |
| Silicon Graphics | Silicon Graphics |
| Silicon Valley | Silicon Valley |
| silicone | silicona |
| silicose | neumoconiosis |
| Silius Italicus | Silio Itálico |
| Siljan | Siljan |
| Silk | Seda |
| Silke Gladisch-Möller | Silke Möller |
| Silkeborg IF | Silkeborg IF |
| Silkroad Online | Silkroad Online |
| Sill | Sill |
| Silla | Silla |
| sillage | estela |
| Sillet | Puente |
| Sillimanite | Sillimanita |
| Sillings | Silingos |
| sillon | huella |
| sillonner | surcar |
| Silly Symphonies | Silly Symphonies |
| Silmaril | Silmaril |
| silo | silo |
| Silo à neige | Pozo de nieve |
| Silphidae | Silphidae |
| Silphium | Silphium |
| Sils im Domleschg | Sils im Domleschg |
| silure | barbo |
| silure glane | siluro |
| Silurien | Silúrico |
| Siluriformes | Siluriformes |
| Silvana Mangano | Silvana Mangano |
| Silvaplana | Silvaplana |
| Silver Star | Estrella de Plata |
| Silver the Hedgehog | Silver The Hedgehog |
| Silverado | Silverado |
| Silvestre Antonio Guzmán Fernández | Silvestre Antonio Guzmán Fernández |
| Silvia Saint | Silvia Saint |
| Silvia Sommerlath | Silvia de Suecia |
| Silvio Berlusconi | Silvio Berlusconi |
| Silvio Gesell | Silvio Gesell |
| Silvère | Silverio |
| Silène | Sileno |
| Silène acaule | Silene acaulis |
| Silène Arméria | Silene armeria |
| Silène enflé | Silene vulgaris |
| Silène penché | Silene nutans |
| Silésie | Silesia |
| Sim | Sem |
| Sima Qian | Sima Qian |
| Simaroubaceae | Simaroubaceae |
| Simat de Valldigna | Simat de Valldigna |
| SimCity | SimCity |
| SimCity Societies | SimCity Societies |
| Simetierre | Cementerio de animales |
| Simferopol | Simferópol |
| simien | símico |
