| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Rufinus | - | Ancient Roman | ||
| Rufus | ROO-fəs (English) | Ancient Roman, English, Biblical | ||
| Sabina | sah-BEE-nah (Italian, Spanish, Polish) | Italian, Spanish, Portuguese, Romanian, Polish, Czech, Slovene, Russian, Croatian, Ancient Roman | ||
| Sabinus | - | Ancient Roman | ||
| Saturnina | sah-toor-NEE-nah (Spanish) | Ancient Roman, Spanish | ||
| Saturninus | - | Ancient Roman | ||
| Scaevola | - | Ancient Roman | ||
| Secundinus | - | Ancient Roman | ||
| Secundus | - | Ancient Roman | ||
| Seneca | SEN-ə-kə (English) | Ancient Roman | ||
| Septima | - | Ancient Roman, Spanish | ||
| Septimius | - | Ancient Roman | ||
| Septimus | - | Ancient Roman | ||
| Sergius | - | Ancient Roman | ||
| Servius | SER-wi-uws | Ancient Roman |