| Nationality: | South Korean |
| Birth Date: | 11 June 1966 |
| Sport: | taekwondo |
| Show-Medals: | yes |
Jang Yoon-jung (born 11 June 1966) is a South Korean former taekwondo practitioner. She won the silver medal at the 1988 Summer Olympics, where taekwondo was a demonstration sport, in the heavyweight event.[1] At the 1988 Asian Taekwondo Championships she became Asian Champion in the heavyweight category.[2]