| SiniŠA | | - | Croatian, Serbian | |
| SlaĐAna | | SLAH-jah-nah | Serbian, Croatian | |
| Slava | | - | Russian, Slovene, Croatian | |
| Slaven | | - | Croatian, Serbian | |
| Slavica | | - | Serbian, Croatian, Slovene, Macedonian | |
| Slavka | | - | Slovene, Croatian | |
| Slavko | | - | Croatian, Serbian, Slovene | |
| Slavomir | | - | Croatian, Serbian, Medieval Slavic | |
| Slobodan | | - | Serbian, Macedonian, Croatian | |
| Slobodanka | | - | Serbian, Croatian | |
| Smiljana | | - | Croatian, Serbian | |
| SnjeŽAna | | - | Croatian, Serbian | |
| Sofija | | - | Serbian, Croatian, Macedonian, Lithuanian, Latvian | |
| Sonja | | ZAWN-yah (German), SON-yah (Finnish) | German, Dutch, Swedish, Norwegian, Danish, Icelandic, Finnish, Slovene, Serbian, Croatian, Macedonia | |
| Spiridon | | - | Greek, Serbian, Croatian | |