| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Iliana | - | Greek, Bulgarian | ||
| Ilie | - | Romanian | ||
| Ilija | - | Macedonian, Serbian, Croatian, Bulgarian | ||
| Ilike | - | Hungarian | ||
| Ilina | - | Bulgarian, Macedonian | ||
| Ilinca | - | Romanian | ||
| Ilinka | - | Macedonian, Serbian, Croatian | ||
| Ilithyia | - | Greek Mythology (Latinized) | ||
| Iliya | - | Bulgarian | ||
| Iliyana | - | Bulgarian | ||
| Ilka | - | Hungarian | ||
| IllÉS | - | Hungarian | ||
| Illarion | - | Russian | ||
| Illiam | - | Manx | ||
| Ilona | EE-lo-naw (Hungarian), ee-LO-nah (German), EE-lo-nah (Finnish) | Hungarian, German, Finnish, Latvian, Lithuanian, Polish, Czech |