| Rada | | - | Russian, Bulgarian, Macedonian, Serbian | |
| Radimir | | - | Russian | |
| 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 | |
| Raisa (1) | | rah-EE-sah | Russian | |
| Renat | | - | Russian | |
| Robert | | RAH-bərt (English), ro-BER (French), RO-bert (German), RO-bərt (Dutch), RAW-bert (Polish), RO-byert (Russian), RO-beert (Russian) | English, French, Swedish, Norwegian, Danish, German, Dutch, Czech, Slovak, Polish, Russian, Slovene, | |
| Rodion | | rah-dee-ON | Russian | |
| Rodya | | - | Russian | |
| Roksana | | rawk-SAH-nah (Polish) | Russian, Polish | |
| Rolan | | - | Russian | |
| Roma (1) | | - | Russian | |
| Roman | | rah-MAHN (Russian), RAW-mahn (Polish) | Russian, Polish, Czech, Slovak, Ukrainian, Slovene, Croatian, German | |
| Rostislav | | rahs-tee-SLAHF (Russian) | Russian, Czech, Medieval Slavic | |