| Isidora | - | Greek Name | ISIDORE | - | Russian Name |
| Isir | - | Muslim Name | Isis | - | Egyptian Name |
| Iskandar | - | Muslim Name | Iskinder | - | African Name |
| Isla | - | Scottish Name | Islah | - | Muslim Name |
| Islam | - | Muslim Name | Isleen | - | Gaelic Name |
| Isley | - | English Name | Isma | - | Muslim Name |
| Ismael | - | Hebrew Name | Ismah | - | Muslim Name |
| Ismail | - | Muslim Name | ISMAT | - | Muslim Name |
| Ismitta | - | African Name | Isobel | - | Scottish Name |
| Isobella | - | Spanish Name | Isoke | - | African Name |
| Isolde | - | Australian Name | Ispah | - | Biblical Name |
| ISRA | - | Muslim Name | Isra | - | Algerian Name |
| Israa | - | Muslim Name | Israel | - | Biblical Name |
| Israr | - | Muslim Name | Israt | - | Algerian Name |
| Issa | - | Egyptian Name | Issabella | - | Hebrew Name |
| Issac | - | Biblical Name | Issachar | - | Biblical Name |
| Issar | - | Muslim Name | Issiah | - | Hebrew Name |
| Istabraq | - | Muslim Name | Istakhri | - | Muslim Name |
| Istaqa | - | American Name | Istardh | - | Hindu Name |
| Istas | - | American Name | Istu | - | American Name |
| Istvan | - | Hungarian Name | Isui | - | Biblical Name |
| Ita | - | Gaelic Name |
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