Qu Yun (simplified Chinese: 瞿韵; traditional Chinese: 瞿韻; pinyin: Qū Yùn; born June 5, 1978 in Hangzhou, Zhejiang) is a former butterfly stroke swimmer from China. In 1993, she broke the Asian Record in women's 200m buttfly at 2:08.53 in Chinese National Games which ranked number 1 in the world in 1993. She also won silver in 100m butterfly at 59.27 which ranked number 2 in the world. She competed in 1994 World Aquatics Championships and won Silver medals in women's 100 m (59.69) and 200 m butterfly (2:07.40). She finished behind her compatriot, Liu Limin in both race. The time in 200m butterfly was her career best. In October, 1994, she set career best in women's 100m butterfly (58.70) in Asian Games to win silver medal behind Liu Limin. In 1996, she won the Olympic trial in April with a time of 2:09.66 in 200m butterfly over Liu Limin and she competed in women's 200 m butterfly at the 1996 Summer Olympics and placed 4th. In 1997, Qu made a come back and scored double win (100 butterfly in 59.36 and 200m butterfly in 2:08.10) in Chinese national Games. Her time in 200m butterfly ranked number 2 in the world behind Susan O'Neill. In January, 1998, She competed women's 200m butterfly in 1998 World Aquatics Championships and finished 5th (2:10.49). This was her last appearance in major competition. She retired after 2001 Chinese National Games.
She obtained her Bachelor's degree (human development) and Master's degree (sport psychology) at Binghamton University and became an assistant coach in Iowa State University. She then returned to Binghamton University as the Associate Head Coach.