| Pauric | Man | Irish Names |
| Pegeen | Woman | Irish Names |
| Peigi | Woman | Irish Names |
| Phalen | Woman | Irish Names |
| Phiala | Unisex | Irish Names |
| Quade | Man | Irish Names |
| Quillan | Unisex | Irish Names |
| Quin | Unisex | Irish Names |
| Quinlan | Unisex | Irish Names |
| Quinn | Unisex | Irish Names |
| Rafferty | Unisex | Irish Names |
| Raghnall | Man | Irish Names |
| Reagan | Unisex | Irish Names |
| Redmond | Man | Irish Names |
| Regan | Unisex | Irish Names |
| Reilly | Unisex | Irish Names |
| Renny | Unisex | Irish Names |
| Rian | Man | Irish Names |
| Rihanna | Woman | Irish Names |
| Riley | Unisex | Irish Names |