| Ivi | Woman | English Names |
| Ivie | Woman | English Names |
| Ivo | Man | English Names |
| Ivory | Unisex | English Names |
| Ivy | Woman | English Names |
| Jacinda | Woman | English Names |
| Jack | Man | English Names |
| Jackie | Woman | English Names |
| Jackson | Man | English Names |
| Jacobean | Unisex | English Names |
| Jacoby | Man | English Names |
| Jade | Unisex | English Names |
| Jagger | Man | English Names |
| Jaguar | Man | English Names |
| Jakobe | Man | English Names |
| Jamese | Unisex | English Names |
| Jameson | Man | English Names |
| Jamie | Unisex | English Names |
| Jamison | Man | English Names |
| Jane | Woman | English Names |