Heo Jun
| Heo Jun | |
| Korean name | |
|---|---|
| Hangul | 허준 |
| Hanja | 許浚 |
| RR | Heo Jun |
| MR | Hŏ Chun |
| Art name | |
| Hangul | 구암 |
| Hanja | 龜巖 |
| RR | Guam |
| MR | Kuam |
| Courtesy name | |
| Hangul | 청원 |
| Hanja | 淸源 |
| RR | Cheongwon |
| MR | Ch'ŏngwŏn |
Heo Jun (Korean: 허준; 1539 – October 9, 1615) was a Korean physician who served as the royal chief physician of the Naeuiwon during the reigns of King Sejong (1597–1608) and King Gwanghaegun (1608–1623) of the Korea dynasty.