| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Jiro | jee-ṙo: | Japanese | ||
| Jirou | jee-ṙo: | Japanese | ||
| Jitender | - | Indian (Sikh) | ||
| Jitendra | - | Indian, Hindi, Marathi, Gujarati | ||
| Ji-U | jee-oo | Korean | ||
| Ji-Woo | jee-oo | Korean | ||
| Ji-Yeong | jee-yung | Korean | ||
| Ji-Young | jee-yung | Korean | ||
| Ji-Yu | jee-yoo | Korean | ||
| Jo | JO (English) | English, German, Dutch | ||
| JoĈJo | YO-chyo | Esperanto | ||
| JoŠKo | - | Croatian | ||
| JoŽIca | - | Slovene, Croatian | ||
| Joab | JO-ab (English) | Biblical | ||
| Joachim | zho-a-KEEM (French), YO-ah-khim (German), yo-AH-khim (German), yaw-AH-kheem (Polish), JO-ə-kim (English) | French, German, Polish, Judeo-Christian Legend |