| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| IARLAITH | EER-lah | Irish | ||
| IASON | - | Greek Mythology, Ancient Greek, Greek, Biblical Greek, Biblical Latin | ||
| IB | - | Danish | ||
| IBAI | - | Basque | ||
| IBRAGIM | - | Chechen, Ossetian | ||
| IBRAHEEM | - | Arabic | ||
| IBRAHIM | - | Arabic, Malay, Indonesian | ||
| IBRAHIMA | - | Western African | ||
| IBRO | - | Bosnian | ||
| ICARUS | IK-ə-rəs (English) | Greek Mythology (Latinized) | ||
| ICHABOD | IK-ə-bahd (English) | Biblical | ||
| ICHIRO | ee-chee-ṙo: | Japanese | ||
| ICHIROU | ee-chee-ṙo: | Japanese | ||
| IDAN | - | Hebrew | ||
| IDIR | - | Northern African, Berber |