William Tevlin Arthur (16 April 1918 – c. 28 February 1982) was an Australian politician. He was a member of the Liberal Party and served in the House of Representatives from 1966 to 1969, representing the New South Wales seat of Barton. He was an unsuccessful candidate for political office on several occasions at state and federal level and later worked as a staffer for Prime Minister John Gorton. He was murdered at the Royal National Park in 1982.