| Havryil | | hahv-ree-YEEL | Ukrainian | |
| Hryhoriy | | hri-HO-reey | Ukrainian | |
| Ihor | | EE-hawr | Ukrainian | |
| Inna | | EE-nah (Russian) | Russian, Ukrainian | |
| Iryna | | ee-RI-nah | Ukrainian | |
| Ivan | | ee-VAHN (Russian, Ukrainian), IE-vən (English) | Russian, Bulgarian, Ukrainian, Belarusian, Serbian, Croatian, Czech, Slovak, Macedonian, Slovene, En | |
| Julia | | JOO-lee-ə (English), YOO-lee-ah (German, Swedish, Danish, Finnish), HOO-lyah (Spanish), YUWL-yah (Polish), YOO-lee-yah (Russian), YOO:-lee-ah (Ancient Roman) | English, German, Swedish, Norwegian, Danish, Dutch, Spanish, Polish, Finnish, Russian, Ukrainian, An | |
| Juliya | | YOO-lee-yah (Russian) | Russian, Ukrainian | |
| Kalyna | | kah-LI-nah | Ukrainian (Rare) | |
| Kateryna | | kah-te-RI-nah | Ukrainian | |
| Khrystyna | | - | Ukrainian | |
| Klara | | KLAH-rah (German, Russian, Polish) | Swedish, Norwegian, Danish, Icelandic, German, Russian, Ukrainian, Polish, Slovene, Croatian | |
| Klavdiya | | KLAHV-dee-yah (Russian) | Russian, Ukrainian, Bulgarian | |
| Klim | | - | Russian, Ukrainian | |
| Kliment | | klee-MYENT (Russian) | Russian, Ukrainian, Bulgarian, Macedonian | |