| Idella | Woman | English Names |
| Iden | Unisex | English Names |
| Idina | Woman | English Names |
| Idonea | Woman | English Names |
| Iggy | Man | English Names |
| Imogen | Woman | English Names |
| Ina | Woman | English Names |
| India | Woman | English Names |
| Irisa | Woman | English Names |
| Irving | Man | English Names |
| Isley | Unisex | English Names |
| Ives | Unisex | English Names |
| Ivi | Woman | English Names |
| Ivie | Woman | English Names |
| Ivo | Man | English Names |
| Ivory | Unisex | English Names |
| Ivy | Woman | English Names |