Peta Luise Seaton AM (born 9 October 1959) is an archaeologist and former New South Wales politician who was a member of the state's Legislative Assembly representing the Southern Highlands for the Liberal Party from 1996 until her retirement prior to the 2007 New South Wales elections. Seaton was born in Port Moresby, Papua New Guinea and received education at Woodford School, Solomon Islands and Wenona School, North Sydney. She completed a Bachelor of Arts (Honours) in Archaeology at the University of Sydney in 1981 and acquired her PhD title in 2007.