Peter David Heyn (born 26 June 1945) is a former Sri Lankan cricketer who played in 18 unofficial Test matches from 1966 to 1976, and two One Day Internationals in the 1975 World Cup. Heyn is widely regarded as one of the best cover point fielders ever to represent Sri Lanka. In September 2018, he was one of 49 former Sri Lankan cricketers honoured by Sri Lanka Cricket for their services before Sri Lanka became a full member of the International Cricket Council (ICC).