| Pyrrhus | | PIR-əs (English) | Greek Mythology (Latinized), Ancient Greek (Latinized) | |
| Pythagoras | | pi-THAG-ər-əs (English) | Ancient Greek | |
| Qiana | | - | African American (Modern) | |
| Qillaq | | - | Native American, Greenlandic | |
| Quanah | | KWAH-nə (English) | Native American, Comanche | |
| Quanna | | KWAH-nə | African American (Rare) | |
| Queralt | | - | Catalan | |
| Quetzalcoatl | | kwet-səl-KWAH-təl (English) | Aztec And Toltec Mythology | |
| Quiana | | - | African American (Modern) | |
| Quianna | | - | African American (Rare) | |
| Quidel | | - | Native American, Mapuche | |
| Quim | | - | Portuguese, Catalan | |
| Quintilianus | | - | Ancient Roman | |
| Quintillus | | - | Ancient Roman | |
| Quintina | | - | Ancient Roman | |