| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Rufus | ROO-fəs (English) | Ancient Roman, English, Biblical | ||
| Ruxandra | - | Romanian | ||
| Sabellius | - | Late Roman | ||
| Sabina | sah-BEE-nah (Italian, Spanish, Polish) | Italian, Spanish, Portuguese, Romanian, Polish, Czech, Slovene, Russian, Croatian, Ancient Roman | ||
| Sabinus | - | Ancient Roman | ||
| Salacia | - | Roman Mythology | ||
| Salvator | - | Late Roman | ||
| Salvatrix | - | Late Roman | ||
| Sanctius | - | Late Roman | ||
| Sanda | - | Romanian, Croatian | ||
| Sandu | - | Romanian | ||
| Saturn | SA-tərn (English) | Roman Mythology (Anglicized) | ||
| Saturnina | sah-toor-NEE-nah (Spanish) | Ancient Roman, Spanish | ||
| Saturninus | - | Ancient Roman | ||
| Saturnus | - | Roman Mythology |