| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Samuilu | - | Old Church Slavic | ||
| Sarra | - | Biblical Greek, Biblical Latin, Old Church Slavic | ||
| Simonu | - | Old Church Slavic | ||
| Stefanu | - | Old Church Slavic | ||
| 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 | ||
| Symeonu | - | Old Church Slavic |