John Hartley "Jack" Chamberlain (29 April 1884 – 16 January 1953) was an English-born Australian politician. Born in Lancashire, he migrated to Australia as a child and was educated at state schools in Latrobe, Tasmania. He served in the military 1914-1918 and returned to farm at Preston. In 1934 he was elected to the Tasmanian House of Assembly as the United Australia Party member for Darwin, serving as Deputy Leader of the Liberal Party and the Opposition 1950-1951. In 1951 he was elected to the Australian Senate as a Liberal Senator for Tasmania. He died in 1953, necessitating the appointment of John Marriott to replace him.[1]