| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| INNOCENT | IN-ə-sənt (English) | History | ||
| INNOCENTIUS | - | Late Roman | ||
| INNOCENZO | - | Italian | ||
| INNOKENTI | - | Russian | ||
| INNOKENTIY | - | Russian | ||
| INNOKENTY | - | Russian | ||
| INOCENCIO | ee-no-THEN-thyo (Spanish), ee-no-SEN-syo (Latin American Spanish) | Spanish | ||
| INTAN | EEN-tahn (Indonesian) | Indonesian, Malay | ||
| INTIRA | - | Thai | ||
| INTO | EEN-to | Finnish | ||
| INZHU | - | Kazakh | ||
| IO | IE-o (English), EE-o (English) | Greek Mythology | ||
| IOAB | - | Biblical Latin, Biblical Greek | ||
| IOACHIM | - | Judeo-Christian Legend | ||
| IOAKEIM | - | Judeo-Christian Legend |