During the 2012–13 season, Reynolds finished fifth and sixth, respectively, at his two Grand Prix events, the 2012 Cup of China and the 2012 NHK Trophy. He took the silver medal at the Canadian Championships for the second time. Reynolds was selected to represent Canada at the 2013 Four Continents and 2013 Worlds. He won gold at the Four Continents Championships. Following the event, a cyst ruptured in the back of his left knee. He finished 5th at the World Championships in London, Ontario, Canada.