| Spiridon | | - | Greek, Serbian, Croatian | |
| Spomenka | | - | Croatian | |
| SreĆKo | | - | Croatian, Serbian | |
| StaŠA | | - | Serbian, Slovene, Croatian | |
| 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 | |
| Stanka | | - | Slovene, Croatian, Bulgarian | |
| Stanko | | STAHN-ko (Slovene, Croatian) | Slovene, Croatian, Serbian, Bulgarian | |
| Stevan | | - | Serbian, Croatian | |
| Stevo | | - | Serbian, Croatian | |
| Stipan | | - | Croatian | |
| Stipe | | - | Croatian | |
| Stipo | | - | Croatian | |
| Stjepan | | - | Croatian, Serbian | |