| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| ILIYA | - | Bulgarian | ||
| ILIYANA | - | Bulgarian | ||
| ILKA | - | Hungarian | ||
| ILLÉS | - | Hungarian | ||
| ILLARION | - | Russian | ||
| ILLIAM | - | Manx | ||
| ILLTYD | - | Welsh | ||
| ILMA | EEL-mah | Finnish | ||
| ILMARI | EEL-mah-ree | Finnish | ||
| ILMARINEN | - | Finnish Mythology | ||
| ILMATAR | - | Finnish Mythology | ||
| ILONA | EE-lo-naw (Hungarian), ee-LO-nah (German), EE-lo-nah (Finnish) | Hungarian, German, Finnish, Latvian, Lithuanian, Polish, Czech | ||
| ILONKA | EE-lon-kaw | Hungarian | ||
| ILSA | IL-sah | German | ||
| Ilse | ['ilzə] |