William Xu Yang (born 11 October 1998) is an Australian swimmer.

[1][2] He participated in the 2022 World Aquatics Championships and 2022 Commonwealth Games.

[3][4] William's parents both are Chinese and he finished his primary school in Guangzhou.

[6] In May 2023, William had a benign tumor in his spinal canal, impinging on a nerve which required immediate surgery.

[5][7] William came second at the 100m freestyle at the 2024 Australian Swimming Trials, achieving a personal best time of 48.08, 0.02 seconds slower than the Swimming Australia Olympic Qualifying Time of 48.06.