| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Ji-Young | jee-yung | Korean | ||
| Ji-Yu | jee-yoo | Korean | ||
| Jong | - | Korean | ||
| Jong-Su | jong-soo | Korean | ||
| Joon | joon | Korean | ||
| Joon-Ho | joon-ho | Korean | ||
| Joo-Won | joo-won | Korean | ||
| Jun | joon (Korean) | Chinese, Korean | ||
| Jung | jung | Korean | ||
| Jung-Hee | jung-hee | Korean | ||
| Jung-Hoon | jung-hoon | Korean | ||
| Jung-Sook | jung-sook | Korean | ||
| Jun-Ho | joon-ho | Korean | ||
| Jun-Seo | joon-su | Korean | ||
| Ju-Won | joo-won | Korean |