| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| RÁ&Eth;ÚLfr | - | Ancient Scandinavian | ||
| RÁIchÉAl | - | Irish | ||
| RÉAmann | - | Irish | ||
| RÉGulo | RE-goo-lo (Spanish) | Spanish, Portuguese | ||
| RÍAn | - | Irish | ||
| RÍGhnach | - | Irish Mythology | ||
| RÍOghnÁN | - | Irish | ||
| RÍOghnach | - | Irish Mythology | ||
| RÍOna | - | Irish | ||
| RÍOnach | - | Irish | ||
| RÓŻA | RUW-zhah | Polish | ||
| RÓIs | - | Irish | ||
| RÓIsÍN | ROSH-een | Irish | ||
| RÓNÁN | RON-awn | Irish | ||
| RÓRdÁN | - | Irish |