Arthur Frederick Watts CMG (26 May 1897 – 8 June 1970) was an Australian politician who served in the Western Australian Legislative Assembly from 1935 to 1962, including as leader of the opposition (from 1942 to 1947) and deputy premier (from 1947 to 1953 and 1959 to 1962) of Western Australia. Despite being Opposition leader, Watts did not become Premier with the change of government at the 1947 election as his party the Country Party won one less seat than its Coalition partner the Liberals resulting in Liberal leader McLarty becoming Premier instead.