| Welsh baby names begining from P |
| Padrig |
 | Welsh form of Patrick 'noble'. |
| Pany |
| Son of Harry. |
| Parry |
| Son of Harry. |
| Pedr |
| Welsh form of Peter 'rock'. |
| Peissawg |
| Legendary king of Brittany. |
| Pembroke |
| Lives in the headland. |
| Penarddun |
 | Legendary daughter of Beli. |
| PenIlyn |
| From the lake's headland. |
| Penn |
| From the peak. |
| Penvro |
| From pembroke. |
| Peredur |
| Legendary son of Evrawg. |
| Perry |
 | Son of Harry. |
| Plys |
| Son of Rhys. |
| Powell |
| Son of Howell. |
| Preece |
| Son of Rhys. |
| Price |
| Son of Rhys. |
| Pryderi |
| Legendary son of Pwyll. |
| Prydwen |
| Handsome. |
| Puw |
| Welsh form of Pugh 'son of Hugh'. |
| Pwyll |
| Son of Howell. |
| Pyrs |
| Welsh form of Pierce 'rock'. |
| |
