Tai Tzu-ying is a Taiwanese badminton player. At the age of 22, she achieved world no.1 in the BWF women's singles ranking in December 2016, and has held that title for 214 weeks, the longest in BWF history. Tai was the women's singles silver medalist in the Tokyo 2020 Olympics and the 2021 BWF World Championships. She was gold medalist in the 2017 Summer Universiade and the 2018 Asian Games. She was the champion of BWF Super Series Finals/BWF World Tour Finals a record four times. She was thrice the champion of the All England Open, and of the Asian Championships.

The women's singles badminton tournament at the 2020 Summer Olympics took place from 24 July to 1 August at the Musashino Forest Sport Plaza at Tokyo. A total of 43 players from 37 nations competed.