Xu Ya (Chinese: 徐涯; born 20 January 1998) is a Chinese badminton player. In 2016, she won the Asia Junior Championships in the girls' doubles event partnered with Du Yue. She also won the silver medal at the World Junior Championships in the girls' doubles event with Du. In 2017, she won the China International Challengge tournament in the women's doubles event partnered with Du and became the runner-up in the mixed doubles event with Tan Qiang.