| Birth Date: | 18 November 1993 |
| Height: | 1.63m |
| Weight: | 53kg |
| Sport: | Wushu |
| Event: | Changquan, Jianshu, Qiangshu |
| Team: | Korean Wushu Team |
| Show-Medals: | no |
Seo Hee-ju (; born November 18, 1993) is a retired wushu taolu athlete from South Korea. She was a two-time world champion and medalist at the World Games and the Asian Games.
Seo made her international debut at the 2009 World Wushu Championships where she finished sixth in qiangshu.[1] She then competed in the 2010 Asian Games and finished 8th in women's changquan. At the 2011 World Wushu Championships, she finished sixth in jianshu.[2] Two years later at the 2013 World Wushu Championships, she finished sixth in changquan and eighth in jianshu.[3]
A year later at the 2014 Asian Games in Incheon, she won the bronze medal in women's jianshu and qiangshu.[4] A year later, she competed in the 2015 World Wushu Championships and became the world champion in jianshu.[5] She continued to hold this title at the 2017 World Wushu Championships in addition to winning the silver medal in qiangshu.[6] During training a day before she competed at the 2018 Asian Games, she injured her knee and had to withdraw from the competition.[7] A year later, she returned to competition and won the bronze medal in jianshu at the 2019 World Wushu Championships.[8]
After the start of the COVID-19 pandemic, her first major appearance was at the 2022 World Games where she won the bronze medal in jianshu and qiangshu combined. A year later, she competed in the 2022 Asian Games (held in September 2023) and finished fourth in women's jianshu and qiangshu.[9] [10] A few months later, she competed in the 2023 World Wushu Championships and won the silver medal in qiangshu. She then declared her retirement shortly after the competition.