| Yakim | | - | Russian | |
| Yakov | | YAH-kahf (Russian) | Hebrew, Russian, Bulgarian | |
| Yan (1) | | - | Belarusian | |
| Yana | | - | Bulgarian, Russian, Ukrainian | |
| Yaroslav | | yah-rah-SLAHF (Russian) | Russian, Ukrainian, Medieval Slavic | |
| Yaroslava | | yah-rah-SLAH-vah (Russian) | Russian, Ukrainian, Medieval Slavic | |
| Yasha | | - | Russian | |
| Yefim | | ye-FEEM, ee-FEEM | Russian | |
| Yefrem | | - | Russian | |
| Yegor | | ye-GOR | Russian | |
| Yekaterina | | ye-kah-tye-REE-nah, ee-kah-tee-REE-nah | Russian | |
| Yelena | | ye-LYE-nah, ee-LYE-nah | Russian | |
| Yelizaveta | | ye-lee-zah-VYE-tah, ee-lee-zah-VYE-tah | Russian | |
| Yemelyan | | - | Russian | |
| Yermolai | | - | Russian | |