| SÁRa | | SAH:-rah (Czech) | Hungarian, Czech, Slovak | |
| Sabina | | sah-BEE-nah (Italian, Spanish, Polish) | Italian, Spanish, Portuguese, Romanian, Polish, Czech, Slovene, Russian, Croatian, Ancient Roman | |
| Samuel | | SAM-yoo-əl (English), SAM-yəl (English), sah-MWEL (Spanish), SAH-moo-el (Swedish, Finnish) | English, French, German, Dutch, Spanish, Portuguese, Polish, Czech, Slovak, Swedish, Norwegian, Dani | |
| Silvestr | | - | Czech | |
| Silvie | | - | Czech | |
| Simona | | - | Italian, Czech, Slovak, Romanian, Lithuanian, Slovene, Bulgarian, Macedonian | |
| SlavĚNa | | - | Czech | |
| SlavomÍR | | - | Czech, Slovak | |
| SoŇA | | - | Czech, Slovak | |
| Sofie | | zo-FEE (German), so-FEE-e (Danish), so-FEE (Dutch) | German, Danish, Dutch, Czech | |
| Stana | | - | Czech, Serbian, Croatian | |
| Stanislav | | stah-nee-SLAHF (Russian) | Czech, Slovak, Russian, Ukrainian, Bulgarian, Slovene, Serbian, Croatian, Medieval Slavic | |
| Stanislava | | stah-nee-SLAH-vah (Russian) | Czech, Slovak, Bulgarian, Serbian, Croatian, Slovene, Russian, Medieval Slavic | |
| SvĚTlana | | - | Czech | |
| Svatava | | - | Czech | |