| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Izolda | ee-ZAWL-dah (Polish) | Georgian, Polish | ||
| Izrail | - | Judeo-Christian Legend | ||
| IzsÁK | EE-zhahk | Hungarian | ||
| Izudin | - | Bosnian | ||
| Izumi | ee-zoo-mee | Japanese | ||
| JĀNis | - | Latvian | ||
| JĀZeps | - | Latvian | ||
| JŪLija | - | Latvian | ||
| JÁKob | - | Hungarian | ||
| JÁNos | YAH-nosh | Hungarian | ||
| JÁZmin | YAHZ-meen | Hungarian | ||
| JÓHann | - | Icelandic | ||
| JÓHanna | - | Icelandic | ||
| JÓHannes | - | Icelandic, Faroese | ||
| JÓN | - | Icelandic, Faroese |