| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Iafeth | - | Biblical Latin | ||
| Iahel | - | Biblical Latin | ||
| Iair | - | Biblical Latin, Biblical Greek | ||
| Iairus | - | Biblical Latin | ||
| Iared | - | Biblical Latin, Biblical Greek | ||
| Iason | - | Greek Mythology, Ancient Greek, Greek, Biblical Greek, Biblical Latin | ||
| Idida | - | Biblical Latin | ||
| Iepthae | - | Biblical Latin | ||
| Iesus | - | Biblical Latin | ||
| Ioab | - | Biblical Latin, Biblical Greek | ||
| Iob | - | Biblical Latin, Biblical Greek | ||
| Iohanna | - | Biblical Latin | ||
| Iohannes | - | Biblical Latin | ||
| Iohel | - | Biblical Latin | ||
| Iona (2) | - | Russian, Georgian, Biblical Latin |