Henry Peter Kestel Dunn (11 September 1935) is a former Australian politician. He was a Liberal member of the South Australian Legislative Council from 1982 to 1997, and served as the President of the Council from 1994 to 1997.
Dunn was born in Cowell, a rural town on South Australia's Eyre Peninsula on 11th September 1935.
Dunn received his secondary education at Prince Alfred College in Adelaide, before attending the University of Adelaide's Roseworthy Campus, where he received a Diploma in Agriculture (RDA) in 1956. Following graduation, Peter Dunn returned to his family's Eyre Peninsula farm at Rudal, where he was an active community member.