Sun Ziyue (Chinese: 孙子玥; pinyin: Sūn Ziyuè; born 6 July 1996 in Nanjing) is a Chinese tennis player.
Sun has won one doubles title on the ITF tour in her career. On 30 July 2012, she reached her best singles ranking of world number 907. On 18 August 2014, she peaked at world number 383 in the doubles rankings.
At the 2013 Asian Youth Games, Sun won both the girls' singles and mixed doubles titles.
Partnering Xu Shilin, Sun won her first $50,000 ITF tournament at the event in Sanya, defeating Yang Zhaoxuan and Zhao Yijing in the 2013 final.