| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Iakob | - | Georgian | ||
| Iakopa | - | Hawaiian | ||
| Iancu | - | Romanian | ||
| Ianuarius | - | Ancient Roman | ||
| Ianus | - | Roman Mythology | ||
| Iason | - | Greek Mythology, Ancient Greek, Greek, Biblical Greek, Biblical Latin | ||
| Ib | - | Danish | ||
| Ibolya | - | Hungarian | ||
| Ibragim | - | Chechen, Ossetian | ||
| Ibrahim | - | Arabic, Malay, Indonesian | ||
| Ibrahima | - | Western African | ||
| Ibro | - | Bosnian | ||
| Ichiro | ee-chee-ṙo: | Japanese | ||
| Ichirou | ee-chee-ṙo: | Japanese | ||
| Ida | IE-də (English), EE-dah (German, Swedish, Danish, Dutch, Italian) | English, German, Swedish, Norwegian, Danish, Dutch, Italian, Spanish, Portuguese, Hungarian, Slovene |