| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| PÁDraic | PAW-drik | Irish | ||
| PÁDraig | PAW-drig, PAW-rig | Irish | ||
| PÁDraigÍN | PAW-dri-geen | Irish | ||
| PÓL | POL | Irish | ||
| Paddy | - | Irish | ||
| ParthalÁN | PAHR-ha-lawn | Irish Mythology | ||
| Patrick | PAT-rik (English), pat-REEK (French), PAHT-rik (German) | Irish, English, French, German | ||
| Patsy | PAT-see | English, Irish | ||
| Peadar | PAD-ar | Irish, Scottish | ||
| Phelan | - | Irish | ||
| Phelim | - | Irish | ||
| Piaras | PEE-a-rus | Irish | ||
| Pilib | - | Irish | ||
| Proinsias | - | Irish |