| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Irving | UR-ving (English, Scottish) | English, Scottish, Jewish | ||
| Isaac | IE-zək (English) | English, Jewish, Biblical, Biblical Latin | ||
| Isaiah | ie-ZAY-ə (English), ie-ZIE-ə (English) | English, Jewish, Biblical | ||
| Isidore | IZ-i-dawr (English), ee-zee-DOR (French) | English, French, Georgian, Jewish | ||
| Israel | IZ-ray-əl (English), IZ-ree-əl (English) | Jewish, English, Biblical, Biblical Greek |