| Iago | - | Spanish Name | Iain | - | Gaelic Name |
| Iakai | - | West Indies Name | Iakopa | - | Polynesian Name |
| Ian | - | English Name | Iarl | - | Norse Name |
| Ibaad | - | Muslim Name | Ibad | - | Arabic Name |
| Ibadet | - | Turkish Name | Ibadullah | - | Turkish Name |
| Iban | - | Basque Name | Ibbi | - | Norse Name |
| Ibhanan | - | Indian Name | Ibhanan | - | Hindu Name |
| Ibhar | - | Biblical Name | Ibhya | - | Indian Name |
| Ibhya | - | Hindu Name | Ibila | - | Algerian Name |
| Ibn | - | Muslim Name | Ibneiah, Ibniah | - | Biblical Name |
| Ibon | - | Basque Name | Ibra | - | Cameroon Name |
| Ibraheem | - | Hebrew Name | Ibrahim | - | Muslim Name |
| Ibrahima | - | Cameroon Name | Ibran | - | West Indies Name |
| Ibrani | - | Assyrian Name | Ibukunoluwa | - | Nigerian Name |
| Ibzan | - | Biblical Name | Iccauhtli | - | Nahuatl Name |
| Ichaa | - | Hindu Name | Ichabod | - | Biblical Name |
| Ichel | - | Yiddish Name | Ichik | - | Hindu Name |
| Ichiro | - | Japanese Name | Idar | - | Norse Name |
| Idaspati | - | Hindu Name | Iddin | - | Assyrian Name |
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