| Iggi | Man | African Names |
| Iggy | Man | English Names |
| Ignace | Man | French Names |
| Ignacia | Woman | Spanish Names |
| Ignacio | Man | Spanish Names |
| Ignatia | Woman | Latin - Roman Names |
| Ignatius | Man | Latin Names |
| Ignatz | Man | German Names |
| Igone | Woman | Basque Names |
| Igor | Man | Russian Names |
| Igraine | Woman | Welsh Names |
| Iha | Woman | Indian Names |
| Ihiaka | Man | Maori Names |
| Ihsan | Man | Turkish Names |
| Ihuicatl | Unisex | Aztec Names |
| Iikka | Man | Scandinavian Names |
| Iiona | Woman | Scandinavian Names |
| Ijlal | Woman | Arabic Names |
| Ijn | Woman | Korean Names |
| Ikaia | Unisex | Hawaiian Names |