| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Sasha | - | Russian, Ukrainian, English, French | ||
| Semen | - | Ukrainian, Russian | ||
| Serhiy | - | Ukrainian | ||
| Sofiya | sah-FEE-yah (Russian) | Russian, Ukrainian, Bulgarian | ||
| Spartak | - | Russian, Ukrainian, Bulgarian, Albanian, Armenian, Georgian | ||
| Stanislav | stah-nee-SLAHF (Russian) | Czech, Slovak, Russian, Ukrainian, Bulgarian, Slovene, Serbian, Croatian, Medieval Slavic | ||
| Svitlana | - | Ukrainian | ||
| Svyatoslav | svyah-tah-SLAHF (Russian) | Russian, Ukrainian | ||
| Symon | - | Ukrainian (Rare) |