| Name | Group | Language of Origin | Languages of Use | Meaning/Translation or Related Words | US 2021 |
|---|
| Siiri | Sigrid | Old Norse | Finnish | Words: victory / beautiful | |
| Sila | Sila | Turkish | Turkish | home, homeland | |
| Sile | Cecil/Cecilia | Latin | Irish | Words: blind | |
| Silja | Cecil/Cecilia | Latin | German, Frisian, Low German, Scandinavian | Words: blind | |
| Silje | Cecil/Cecilia | Latin | Scandinavian | Words: blind | |
| Silka | Cecil/Cecilia | Latin | German, Frisian, Low German | Words: blind | |
| Silke | Cecil/Cecilia | Latin | German, Frisian, Low German | Words: blind | |
| Sille | Cecil/Cecilia | Latin | Scandinavian | Words: blind | |
| Silva | Silvius/Silvia | Latin | Scandinavian | forest man | |
| Silvana | Silvan/Silvana | Latin | German, Italian | Words: wood, forest | |
| Silvia | Silvius/Silvia | Latin | German, Italian | forest man | |
| Silviana | Silvan/Silvana | Latin | German | Words: wood, forest | |
| Silviya | Silvius/Silvia | Latin | Bulgarian | forest man | |
| Simea | Simea | Unknown | German | | |
| Simin | Simin | Persian | Persian | silvery | |
| Simona | Simon/Simone | Hebrew | Scandinavian, Italian | He (God) has heard | |
| Simone | Simon/Simone | Hebrew | German, French | He (God) has heard | #873 |
| Simonetta | Simon/Simone | Hebrew | Italian | He (God) has heard | |
| Simonette | Simon/Simone | Hebrew | French | He (God) has heard | |
| Simonne | Simon/Simone | Hebrew | Dutch | He (God) has heard | |
| Sina | Sina | German | German | | |
| Sinagtala | Sinagtala | Tagalog | Tagalog | starlight | |
| Sindi | Cynthia | Old Greek | Albanian | woman from the mountain Kynthos on Delos island | |
| Sinead | John/Johanna | Hebrew | Irish | Yahweh is gracious | |
| Sinéad | John/Johanna | Hebrew | Irish | Yahweh is gracious | |
| Sinem | Sinem | Turkish | Turkish | maybe heart | |
| Sini | Sini | Finnish | Finnish | blue | |
| Sinikka | Sini | Finnish | Finnish | blue | |
| Sinja | Sina | German | German | | |
| Sinje | Sina | German | German | | |
| Sinta | Sita | Sanskrit | Malay | furrow | |
| Siobhan | John/Johanna | Hebrew | Irish | Yahweh is gracious | |
| Siona | Siona | Unknown | English | | |
| Sira | Sira | Unknown | German | | |
| Siri | Sigrid | Old Norse | Scandinavian | Words: victory / beautiful | |
| Siria | Sirius/Siria | Old Greek | German | | |
| Sirine | Sirine | Unknown | French, Arabic | | |
| Sirkka | Sirkka | Finnish | Finnish | maybe cricket | |
| Sissi | Elizabeth | Hebrew | German | My God is abundance; My God has sworn | |
| Sissy | Elizabeth | Hebrew | German | My God is abundance; My God has sworn | |
| Sissy | Cecil/Cecilia | Latin | English | Words: blind | |
| Sita | Sita | Sanskrit | Hindi | furrow | |
| Sitara | Sitara | Old Persian | Hindi | star | |
| Siti | Siti | Unknown | Malay | | |
| Siv | Siv | Old Norse | Scandinavian | bride | |
| Siv | Siv | Old Norse | Scandinavian | bride | |
| Sixte | Sixtus/Sixte | Old Greek | French | | |
| Sixtina | Sixtus/Sixte | Old Greek | French | | |
| Sixtine | Sixtus/Sixte | Old Greek | French | | |
| Siya | Sita | Sanskrit | Hindi | furrow | |
| Siyana | Siyana | Unknown | Bulgarian | | |
| Sky | Sky | English | English | sky | #714 |
| Skye | Sky | English | English | sky | #429 |
| Skyla | Skylar/Skylar | Dutch | English | student, scholar | #629 |
| Skylar | Skylar/Skylar | Dutch | English | student, scholar | #74 |
| Skyler | Skylar/Skylar | Dutch | English | student, scholar | #555 |
| Sladjana | Sladjana | Unknown | Slavic | | |
| Sloan | Sloan | Old Irish | English | descendant of Sluaghadhán | #574 |
| Sloane | Sloan | Old Irish | English | descendant of Sluaghadhán | #143 |
| Slobadanka | Slobodan/Slobadanka | Slavic | Slavic | | |
| Smeralda | Esmeralda | Spanish | Italian | smaragd | |
| Smilla | Smilla | Scandinavian | Scandinavian | | |
| Smilte | Smilte | Lithuanian | Lithuanian | sandwort | |
| Snezana | Snezana | Slavic | Slavic | Words: snow / woman | |
| Snjezana | Snezana | Slavic | Slavic | Words: snow / woman | |
| Sofi | Sophia | Old Greek | Armenian | wisdom | |
| Sofia | Sophia | Old Greek | German, Scandinavian, Italian | wisdom | #18 |
| Sofía | Sophia | Old Greek | Spanish | wisdom | |
| Sofía Guadalupe | Sofía Guadalupe | Spanish | Spanish | | |
| Sofie | Sophia | Old Greek | German, Scandinavian, Dutch | wisdom | |
| Sofiía | Sophia | Old Greek | Spanish | wisdom | |
| Sofija | Sophia | Old Greek | Latvian | wisdom | |
| Sofiya | Sophia | Old Greek | Russian, Bulgarian | wisdom | |
| Sofronia | Sophia | Old Greek | Italian | wisdom | |
| Sofya | Sophia | Old Greek | Russian | wisdom | |
| Sol | Sol | Spanish | Portuguese, Spanish | sun | |
| Solange | Solange | Latin | French | Words: religious, festive, solemn | |
| Sóldís | Sóldís | Old Norse | Icelandic | Words: sun / goddess | |
| Sole | Sole | Italian | Italian | sun | |
| Solea | Soledad | Spanish | German | solitude | |
| Soledad | Soledad | Spanish | Spanish | solitude | |
| Soleil | Soleil | French | English | sun | #996 |
| Solène | Solange | Latin | French | Words: religious, festive, solemn | |
| Solenn | Solange | Latin | French | Words: religious, festive, solemn | |
| Solenne | Solange | Latin | French | Words: religious, festive, solemn | |
| Soley | Soley | Old Norse | Scandinavian | Words: house, hall / island | |
| Sóley | Soley | Old Norse | Icelandic | Words: house, hall / island | |
| Solidea | Solideo/Solidea | Latin | Italian | only for God | |
| Soline | Solange | Latin | French | Words: religious, festive, solemn | |
| Solveig | Solveig | Old Norse | German, Scandinavian | Words: house, hall / strength / sun / way, lane | |
| Sólveig | Solveig | Old Norse | Icelandic | Words: house, hall / strength / sun / way, lane | |
| Solveigh | Solveig | Old Norse | German, Scandinavian | Words: house, hall / strength / sun / way, lane | |
| Solvejg | Solveig | Old Norse | Scandinavian | Words: house, hall / strength / sun / way, lane | |
| Solvig | Solveig | Old Norse | Scandinavian | Words: house, hall / strength / sun / way, lane | |
| Sommer | Summer | English | English | summer | |
| Sona | Sona | Unknown | Armenian | | |
| Sonia | Sophia | Old Greek | English | wisdom | |
| Sônia | Sophia | Old Greek | Portuguese | wisdom | |
| Sonja | Sophia | Old Greek | German | wisdom | |
| Sonnhild | Sunnhild | Old High German | German | Words: sun / fight | |
