| Jeong Nam-gyun | |
| Nationality: | South Korean |
| Sport: | Long-distance running |
| Event: | Marathon |
| Birth Date: | 23 October 1978 |
Jeong Nam-gyun (born 23 October 1978), also spelled Jung Nam-gyun, is a South Korean long-distance runner. He competed in the men's marathon at the 2000 Summer Olympics.[1]
Jung won the 2000 Dong-A Marathon in 2:11:59 hours. His appearance to win that race was described as sudden.[2]