John Watson MacNaught, PC (June 19, 1904 – December 25, 1984) was a Canadian politician.
Born in Coleman, Prince Edward Island, he was first elected to the House of Commons of Canada representing the riding of Prince in the 1945 federal election.
He was the Parliamentary Assistant to the Minister of Fisheries.
From 1963 to 1965, he was the Solicitor General of Canada and a Minister without Portfolio.
This article about a Prince Edward Island politician is a stub.