| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| IGNAZIO | - | Italian | ||
| IGON | - | Basque | ||
| IGONE | - | Basque | ||
| IGOR | EE-gər (Russian), EE-gawr (Polish) | Russian, Polish, Slovene, Croatian, Serbian, Macedonian | ||
| IGRAINE | - | Arthurian Romance | ||
| IHAB | - | Arabic | ||
| IHAR | EE-khahr | Belarusian | ||
| IHINTZA | - | Basque | ||
| IHOR | EE-hawr | Ukrainian | ||
| IHSAN | - | Arabic | ||
| IIDA | EE:-dah | Finnish | ||
| IIKKA | EE:K-kah | Finnish | ||
| IINA | - | Finnish | ||
| IINES | EE:-nes | Finnish | ||
| IIRIS | - | Finnish |