Sir Peter Leslie Charles Barter GCL OBE (26 March 1940 – 21 June 2022) was an Australian-born, naturalised Papua New Guinean businessman and politician based in the Madang Province, where he owned and operated the Madang Resort. He was Governor of Madang from 1997 to 2002 where he served as Minister for Health and Bougainville Affairs in the Papua New Guinean Government and was active in the reconciliation movement in Bougainville. He established the Melanesian Foundation in 1980, a not-for-profit organisation that invests in remote communities that have been hospitable to tourists.