| Romulus | | RAWM-yə-ləs (English) | Roman Mythology | |
| Rostam | | - | Persian, Persian Mythology | |
| Saam | | - | Persian, Persian Mythology | |
| Sabia | | - | Irish Mythology | |
| Sadb | | SIEV (Irish) | Irish, Irish Mythology | |
| Sadbh | | SIEV (Irish) | Irish, Irish Mythology | |
| Sadhbh | | SIEV (Irish) | Irish, Irish Mythology | |
| Saga | | SAH-gah (Swedish) | Norse Mythology, Swedish, Icelandic | |
| Salacia | | - | Roman Mythology | |
| Sam (2) | | - | Persian, Persian Mythology | |
| Sampo | | SAHM-po (Finnish) | Finnish, Finnish Mythology | |
| Sarosh | | - | Persian Mythology | |
| Sarpedon | | - | Greek Mythology | |
| Saturn | | SA-tərn (English) | Roman Mythology (Anglicized) | |
| Saturnus | | - | Roman Mythology | |