Matthew Hauser (born 3 April 1998) is an Australian triathlete. In 2021, he competed in the men's triathlon at the 2020 Summer Olympics held in Tokyo, Japan. He also competed in the mixed relay event. In 2018, he won the gold medal in the mixed relay event at the Commonwealth Games held in Gold Coast, Australia. He also finished in 4th place in the men's triathlon. He won a bronze medal in the men's triathlon at the 2022 Commonwealth Games. Hauser also competes in Super League Triathlon racing.