Brett Sutton (born 16 May 1959) is an Australian triathlon coach and a former professional boxer, boxing coach, greyhound trainer, racehorse trainer and swimming coach, who is the head coach of Trisutto.com. Before setting up Trisutto.com, he was head coach of the triathlon team . He has coached many World and Olympic champions, including Ironman world record holder Chrissie Wellington and Olympic champions Nicola Spirig and Emma Snowsill. He is known for his forthright views on training methods and strong criticism of the International Triathlon Union (ITU) and its officials.