Zhao Yunlei is a mixed and women's doubles badminton player from China. She graduated with a BA from Huazhong University of Science and Technology. She is the first and only badminton player to have ever won two gold medals in the same Olympic edition, winning in both the mixed and women's doubles categories in 2012. Zhao joins the ranks with nine other players with two Olympic gold medals, the highest number of gold medals won by any badminton player. Through her performance at the 2014 and 2015 BWF World Championships, she became the first player to win two gold medals in two consecutive BWF World Championships.

The BWF World Championships, formerly known as IBF World Championships, and also known as the World Badminton Championships, is a badminton tournament sanctioned by Badminton World Federation (BWF). The tournament is one of the most prestigious in badminton, offering the most ranking points, together with the Summer Olympics badminton tournaments which was introduced in 1992. The winners of this tournament are also crowned as "World Champions" of the sport, and are awarded a gold medal.