| Pate | | - | Medieval English | |
| Petruccio | | - | Medieval Italian | |
| Piers | | PEERZ (English), PEERS (English) | English (British), Medieval French | |
| Premislav | | - | Medieval Slavic (Hypothetical) | |
| Premysl | | - | Medieval Slavic (Hypothetical) | |
| Pridbor | | - | Medieval Slavic | |
| Radomil | | - | Czech, Medieval Slavic | |
| Radomir | | - | Serbian, Russian, Bulgarian, Medieval Slavic | |
| Radoslav | | rah-dah-SLAHF (Russian) | Czech, Serbian, Croatian, Bulgarian, Macedonian, Russian, Medieval Slavic | |
| Radoslava | | rah-dah-SLAH-vah (Russian) | Czech, Bulgarian, Russian, Serbian, Croatian, Macedonian, Medieval Slavic | |
| Radovan | | - | Slovak, Czech, Serbian, Croatian, Medieval Slavic | |
| Randel | | - | Medieval English | |
| Ratimir | | - | Croatian, Medieval Slavic | |
| Rohese | | - | Medieval English | |
| Rohesia | | - | Medieval English (Latinized) | |