| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Ignacy | eeg-NAH-tsi | Polish | ||
| Ignatiy | - | Russian | ||
| Igon | - | Basque | ||
| Igone | - | Basque | ||
| Igor | EE-gər (Russian), EE-gawr (Polish) | Russian, Polish, Slovene, Croatian, Serbian, Macedonian | ||
| Ihar | EE-khahr | Belarusian | ||
| Ihintza | - | Basque | ||
| Iida | EE:-dah | Finnish | ||
| Iikka | EE:K-kah | Finnish | ||
| Iina | - | Finnish | ||
| Iines | EE:-nes | Finnish | ||
| Iiris | - | Finnish | ||
| Iiro | EE:-ro | Finnish | ||
| Iisakki | EE:-sahk-kee | Finnish | ||
| Ike | IEK | English |