| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| IrÉN | - | Hungarian | ||
| Irma | EER-mah (German, Finnish), UR-mə (English) | German, English, Dutch, Finnish, Spanish, Italian, Georgian, Lithuanian, Hungarian (Rare), Ancient G | ||
| Irmuska | EER-moosh-kaw | Hungarian (Rare) | ||
| IstvÁN | - | Hungarian | ||
| IvÁN | - | Spanish, Hungarian | ||
| Izabella | ee-zah-BEL-lah (Polish) | Hungarian, Polish | ||
| IzidÓRa | - | Hungarian (Rare) | ||
| IzsÁK | EE-zhahk | Hungarian | ||
| JÁKob | - | Hungarian | ||
| JÁNos | YAH-nosh | Hungarian | ||
| JÁZmin | YAHZ-meen | Hungarian | ||
| JÓSka | - | Hungarian | ||
| JÓZsef | YO-zhef | Hungarian | ||
| JÓZsi | YO-zhee | Hungarian | ||
| JÓZsua | YO-zhoo-aw | Hungarian |