| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Svjetlana | - | Croatian, Serbian | ||
| Svyatopolk | - | Russian | ||
| Svyatoslav | svyah-tah-SLAHF (Russian) | Russian, Ukrainian | ||
| Sweeney | - | Irish, Scottish | ||
| Swi&Eth;Hun | - | Anglo-Saxon | ||
| Swithin | - | History | ||
| Swithun | - | History | ||
| Sybella | si-BEL-ə | English (Rare) | ||
| Sybil | SIB-əl | English | ||
| Sybilla | - | Polish, Late Roman | ||
| Syd | SID | English | ||
| Sydne | SID-nee | English (Rare) | ||
| Sydney | SID-nee | English | ||
| Sydnie | SID-nee | English (Modern) | ||
| Sylvana | sil-VAN-ə (English) | Various |