Choi Hyo-joo (, born 15 April 1998) is a Chinese-South Korean table tennis player. Born in China as Yao Yao (), she became a naturalized South Korean citizen in November 2013.
She represented South Korea at the team event in the 2020 Summer Olympics.
A Jiangsu native, Choi (then known as Yao Yao) attended a table tennis school in Qingdao, Shandong at a young age. In 2009, she finished 8th in the national cadet tournament, behind the likes of Chen Meng, Gu Yuting, Shao Jieni, and Zhu Yuling. She was spotted by Choi Young-il, head coach of the Korean club Samsung Life, who persuaded her to go to South Korea and acquire Korean nationality. Several people helped out with her naturalization: the mother of Jeong Sang-eun, another Chinese-born South Korean player, and Coach Choi's older brother, a public employee, who volunteered to foster her. Later, when she became a naturalized Korean, she adopted the surname Choi.
Women's singles
Women's doubles