| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Rudesind | - | Ancient Germanic | ||
| Rufina | - | Russian, Spanish, Ancient Roman | ||
| Rufinus | - | Ancient Roman | ||
| Rufus | ROO-fəs (English) | Ancient Roman, English, Biblical | ||
| SÓLveig | - | Ancient Scandinavian, Icelandic | ||
| Sabina | sah-BEE-nah (Italian, Spanish, Polish) | Italian, Spanish, Portuguese, Romanian, Polish, Czech, Slovene, Russian, Croatian, Ancient Roman | ||
| Sabinus | - | Ancient Roman | ||
| Sappho | SAF-o (English) | Ancient Greek | ||
| Saturnina | sah-toor-NEE-nah (Spanish) | Ancient Roman, Spanish | ||
| Saturninus | - | Ancient Roman | ||
| Saxa | - | Ancient Germanic | ||
| Scaevola | - | Ancient Roman | ||
| Secundinus | - | Ancient Roman | ||
| Secundus | - | Ancient Roman | ||
| Seisyll | - | Ancient Celtic |