| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Ikenna | - | Western African, Igbo | ||
| Iker | - | Basque | ||
| Ilar | - | Welsh | ||
| Ilari | EE-lah-ree (Finnish) | Russian, Finnish | ||
| Ilbert | - | English (Rare) | ||
| Ildefonso | - | Spanish | ||
| Ilean | ie-LEEN | English (Rare) | ||
| Ileana | - | Romanian, Spanish, Italian | ||
| Ileen | ie-LEEN | English (Rare) | ||
| Ilene | ie-LEEN | English | ||
| Ilia | eel-YAH (Russian) | Georgian, Russian, Bulgarian, Old Church Slavic | ||
| Ilija | - | Macedonian, Serbian, Croatian, Bulgarian | ||
| Ilinka | - | Macedonian, Serbian, Croatian | ||
| Illarion | - | Russian | ||
| Illtyd | - | Welsh |