Derek Lionel Eaton QSM (born 10 September 1941) is a retired New Zealand Anglican bishop. He was the 9th Anglican Bishop of Nelson, from 1990 to 2006. He was educated at Christchurch Boys' High School and Auckland College of Education after which he worked as a teacher until studying for the Priesthood. He was ordained in 1971 and after a curacy at St Luke's, Bristol he was Vicar of Tunis. Later he was Provost of All Saint's Cathedral, Cairo and held incumbencies at Bishopdale and (his last appointment before ordination to the episcopate) Redcliffs. He is married to Alice Eaton. He was consecrated a bishop on 24 June 1990.