| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| 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 | ||
| Ilonka | EE-lon-kaw | Hungarian | ||
| Ilsa | IL-sah | German | ||
| Ilse | IL-sə (German) | German, Dutch | ||
| Il-Seong | eel-sung | Korean | ||
| Ilya | eel-YAH | Russian | ||
| Ilyas | - | Arabic | ||
| Ima | - | Dutch, Ancient Germanic | ||
| Imad | - | Arabic | ||
| Imam | - | Arabic | ||
| Imamu | - | Eastern African, Swahili |