Sir Peter Robert Skelton KNZM (born 13 October 1939) is a retired judge of the Environment Court in New Zealand.

After retiring from the bench, he taught environmental law at Lincoln University for some years in the early 2000s.

[1] His parents were George Arthur Skelton and Helen Ainslie Dundas (née Paterson).

[3] Upon his retirement from the bench, Skelton was invited by Lincoln University to teach environmental law.

[3] In March 2010, the John Key National Government sacked the Environment Canterbury councillors[8] and replaced them with seven commissioners, of which Skelton was one.

[10] Skelton was appointed as the inaugural chief commissioner in 2020; he retired in 2022 after 18 months in the role and was replaced by Environment Court judge Laurie Newhook.

[16] On 8 April 2016, Lincoln University conferred an honorary degree of Doctor of Natural Resources on Skelton.

[17] In the 2025 New Year Honours, Skelton was promoted to Knight Companion of the New Zealand Order of Merit, for services to environmental law.