| Perica | | PE-ree-tsah | Croatian, Serbian | |
| Pero | | - | Serbian, Croatian | |
| Petar | | - | Serbian, Croatian, Bulgarian, Macedonian | |
| Petra | | PET-rah (Finnish), PET-rə (English) | German, Dutch, Czech, Slovak, Slovene, Croatian, Hungarian, Swedish, Finnish, English | |
| Predrag | | - | Serbian, Croatian | |
| Rade | | - | Serbian, Croatian | |
| Radmila | | - | Serbian, Croatian, Czech | |
| 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 | |
| Rajko | | - | Croatian | |
| Ranka | | - | Croatian | |
| Ranko | | - | Serbian, Croatian | |
| Ratimir | | - | Croatian, Medieval Slavic | |
| Ratko | | - | Croatian, Serbian | |