| Sileny | Woman | Slavic Names |
| Solin | Woman | Slavic Names |
| Sonia | Woman | Slavic Names |
| Stanislaus | Man | Slavic Names |
| Stanislav | Man | Slavic Names |
| Stesha | Man | Slavic Names |
| Sveta | Woman | Slavic Names |
| Svetlana | Woman | Slavic Names |
| Tasya | Woman | Slavic Names |
| Tesla | Woman | Slavic Names |
| Tiana | Woman | Slavic Names |
| Triska | Woman | Slavic Names |
| Troian | Unisex | Slavic Names |
| Urmat | Man | Slavic Names |
| Vaclav | Man | Slavic Names |
| Valerian | Man | Slavic Names |
| Valeska | Woman | Slavic Names |
| Vanja | Man | Slavic Names |
| Vanya | Man | Slavic Names |
| Varvara | Woman | Slavic Names |