Xu Xiangyu (, born 1999) is a Chinese chess grandmaster. He is a second of Wei Yi and the Chinese national team captain.
Xu earned his grandmaster title in 2017.
Competing in the Chess World Cup 2019, he upset his higher-rated compatriot Bu Xiangzhi in the first round and Ernesto Inarkiev in the second, before losing to Alexander Grischuk in the third round.
In 2026, he won the Rilton Cup (the first tournament of the 2026-2027 FIDE Circuit) with 8 points in 9 rounds and no loses, a full point ahead of a three-way tie for 2nd place.