| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Sweeney | - | Irish, Scottish | ||
| Sybille | see-BI-lə (German) | German, French | ||
| Sylvain | seel-VEN | French | ||
| Sylvaine | seel-VEN | French | ||
| Sylvanus | - | English (Archaic) | ||
| Sylvester | sil-VES-tər (English) | English, Dutch, Danish, German | ||
| Sylvestre | - | French | ||
| Sylviane | - | French | ||
| Sylvianne | - | French | ||
| Sylvie | seel-VEE | French | ||
| Symeon | - | Biblical Greek, Biblical Latin | ||
| Symeonu | - | Old Church Slavic | ||
| Syntyche | SIN-tə-kee (English) | Biblical, Biblical Greek, Ancient Greek | ||
| TÀMhas | - | Scottish | ||
| TÉLesphore | - | French |