Seo Hee-ju (Korean: 서희주; RR: seohuiju; born November 18, 1993) is a wushu taolu athlete from South Korea. She is a four-time medalist at the World Wushu Championships and a two-time world champion. She also won the bronze medal in women's jianshu and qiangshu at the 2014 Asian Games in Incheon. During training a day before she competed at the 2018 Asian Games, she injured her knee and had to withdraw from the competition.