| Petrona | | pe-TRO-nah | Spanish | |
| Piedad | | pye-DHAHD | Spanish | |
| Pilar | | pee-LAHR | Spanish | |
| Pili | | PEE-lee | Spanish | |
| PlÁCido | | PLAH-thee-dho (Spanish), PLAH-see-dho (Latin American Spanish) | Spanish, Portuguese | |
| Plinio | | - | Italian, Spanish | |
| Poncio | | PON-thyo (Spanish), PON-syo (Latin American Spanish) | Spanish | |
| Porfirio | | - | Italian, Spanish | |
| Primitiva | | pree-mee-TEE-vah (Spanish) | Spanish, Late Roman | |
| Primitivo | | - | Spanish | |
| Primo | | PREE-mo (Italian, Spanish) | Italian, Spanish, Portuguese | |
| Priscila | | - | Portuguese, Spanish | |
| Prospero | | pro-SPE-ro | Italian, Spanish | |
| Prudencia | | proo-DHEN-thya (Spanish), proo-DHEN-sya (Latin American Spanish) | Spanish | |
| Prudencio | | proo-DHEN-thyo (Spanish), proo-DHEN-syo (Latin American Spanish) | Spanish | |