| Ianna | Woman | American Names |
| Ice | Man | American Names |
| Ickett | Unisex | American Names |
| Idaho | Unisex | American Names |
| Idalee | Woman | American Names |
| Idana | Woman | American Names |
| Ike | Man | American Names |
| Ilandere | Woman | American Names |
| Ilissa | Woman | American Names |
| Ily | Unisex | American Names |
| Ilys | Woman | American Names |
| Ilyssa | Woman | American Names |
| Imagine | Unisex | American Names |
| Imaging | Woman | American Names |
| Independence | Woman | American Names |
| Indiana | Unisex | American Names |
| Indiya | Woman | American Names |
| Indy | Unisex | American Names |
| Infinity | Unisex | American Names |
| Irela | Woman | American Names |