| Raewyn | Woman | Welsh Names |
| Ragle | Unisex | Welsh Names |
| Reese | Unisex | Welsh Names |
| Rhian | Woman | Welsh Names |
| Rhianna | Woman | Welsh Names |
| Rhiannon | Woman | Welsh Names |
| Rhianu | Woman | Welsh Names |
| Rhodri | Man | Welsh Names |
| Rhonda | Woman | Welsh Names |
| Rhoslyn | Unisex | Welsh Names |
| Rhoswen | Woman | Welsh Names |
| Rhun | Man | Welsh Names |
| Rhydian | Man | Welsh Names |
| Rhys | Man | Welsh Names |
| Rice | Unisex | Welsh Names |
| Romney | Man | Welsh Names |