Mustashry (foaled 9 March 2013) is a British Thoroughbred racehorse. He finished fourth on his only run as a juvenile and won two minor races in the following year. As a four-year-old in 2017 he improved to win two races including the Group 3 Strensall Stakes. After being gelded he returned in 2018 to win the Gala Stakes, Park Stakes and Joel Stakes. In 2019 he won the Lockinge Stakes and the Challenge Stakes.