Clarence Isaac Doust (3 August 1885 – 19 April 1961) was an Australian farmer and politician who was an independent member of the Legislative Assembly of Western Australia from 1936 to 1939, representing the seat of Nelson.
Doust enlisted in the Australian Imperial Force in August 1916, and served in France with a medical unit.
[1] Doust was a supporter of the social credit movement (although not associated with its political arm), and was president of the local chapter.
[2] At the 1936 state election, Doust ran for parliament and defeated Jack Smith (a 15-year incumbent) with 57.1 percent of the two-party-preferred vote.
[3] After the election, Doust announced that he would give "general support" to the Labor government of Philip Collier, adding to its narrow majority.