| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Simonas | - | Lithuanian | ||
| Simonu | - | Old Church Slavic | ||
| SmiltĖ | - | Lithuanian | ||
| Sofija | - | Serbian, Croatian, Macedonian, Lithuanian, Latvian | ||
| Solveiga | - | Latvian, Lithuanian | ||
| Soma | SO-maw | Hungarian | ||
| Sonam | - | Tibetan, Bhutanese, Indian, Hindi, Marathi | ||
| Stanislovas | - | Lithuanian | ||
| StefÁNia | - | Hungarian | ||
| Stefanu | - | Old Church Slavic | ||
| Steponas | - | Lithuanian | ||
| Susanna | soo-ZAHN-nah (Italian), SOO-sahn-nah (Finnish), soo-ZAN-ə (English) | Italian, Swedish, Finnish, Russian, Dutch, English, Biblical, Biblical Latin, Old Church Slavic | ||
| SvajonĖ | - | Lithuanian | ||
| Symeonu | - | Old Church Slavic | ||
| Szabina | SAW-bee-naw | Hungarian |