Gregory Hayman

Gregory Hayman (born 21 December 1957) is an Australian former weightlifter. He competed in the men's flyweight event at the 1988 Summer Olympics.

He competed at the Commonwealth Games in 1986, where he won a gold medal in the men's flyweight event, and in 1990, where he won a silver medal in the Clean and Jerk event and bronze medals in the overall and Snatch events.