| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Sanela | - | Croatian | ||
| Sanja | - | Croatian, Serbian | ||
| Sanjica | SAHN-yee-tsah | Croatian | ||
| Sanjin | - | Croatian | ||
| Sebastijan | - | Slovene, Croatian | ||
| Senka | - | Serbian, Croatian | ||
| Severina | - | Italian, Portuguese, Croatian, German, Ancient Roman | ||
| Silvija | - | Croatian, Slovene | ||
| Silvijo | - | Croatian | ||
| Silvio | SEEL-vyo (Italian), SEEL-byo (Spanish) | Italian, Spanish, Portuguese, Croatian | ||
| SiniŠA | - | Croatian, Serbian | ||
| SlaĐAna | SLAH-jah-nah | Serbian, Croatian | ||
| Slava | - | Russian, Slovene, Croatian | ||
| Slaven | - | Croatian, Serbian | ||
| Slavica | - | Serbian, Croatian, Slovene, Macedonian |