| Isolde | - | Australian Name | Ispah | - | Biblical Name |
| Isra | - | Algerian Name | ISRA | - | Muslim Name |
| Israa | - | Muslim Name | Israt | - | Algerian Name |
| Issabella | - | Hebrew Name | Istabraq | - | Muslim Name |
| Istas | - | American Name | Ita | - | Gaelic Name |
| Italia | - | Italian Name | Italy | - | Biblical Name |
| Ithmah | - | Biblical Name | Iti | - | Hindu Name |
| ITIDAL | - | Muslim Name | Itsaso | - | Basque Name |
| Ituha | - | American Name | Iturea | - | Biblical Name |
| Itxaro | - | Basque Name | Itzel | - | American Name |
| Iulia | - | Romanian Name | IVA | - | Russian Name |
| Ivana | - | Slavic Name | Ivania | - | Australian Name |
| Ivanka | - | Australian Name | Ivanna | - | American Name |
| Ivee | - | English Name | Ivelisse | - | Australian Name |
| Iverem | - | African Name | Ivette | - | French Name |
| Ivey | - | American Name | Ivie | - | American Name |
| Ivona | - | Romanian Name | Ivonne | - | French Name |
| Ivori | - | American Name | Ivory | - | English Name |
| Ivy | - | English Name | Ivyanna | - | English Name |
| Ixcatzin | - | Nahuatl Name | Iya | - | Sanskrit Name |
| Iyalisai | - | Indian Name | Iyana | - | American Name |
| Iyangura | - | African Name | Iyanna | - | American Name |
| Iyla | - | Hindu Name | Iza | - | African Name |
| Izabel | - | Hebrew Name |
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