| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Idun | - | Norse Mythology | ||
| Idwal | - | Welsh | ||
| Iefan | - | Welsh | ||
| Iestyn | - | Welsh | ||
| Ieuan | - | Welsh | ||
| Ifan | - | Welsh | ||
| Ife | - | Western African, Yoruba | ||
| Iga | - | Polish | ||
| Ige | - | Western African, Yoruba | ||
| Iggy | - | English | ||
| Ignac | - | Slovene | ||
| Ignacia | eeg-NAH-thyah (Spanish), eeg-NAH-syah (Latin American Spanish) | Spanish | ||
| Ignacij | - | Slovene | ||
| Ignacio | eeg-NAH-thyo (Spanish), eeg-NAH-syo (Latin American Spanish) | Spanish | ||
| Ignacja | - | Polish |