Sir Austin Chapman was an Australian politician who served in the House of Representatives from 1901 until his death in 1926. He held ministerial office in the governments of Alfred Deakin and Stanley Bruce, serving as Minister for Defence (1903–1904), Postmaster-General (1905–1907), Minister for Trade and Customs, and Minister for Health (1923–1924).

Alfred Deakin was an Australian politician, statesman and barrister who served as the second prime minister of Australia from 1903 to 1904, 1905 to 1908 and 1909 to 1910. He held office as the leader of the Protectionist Party, and in his final term as that of the Liberal Party. He is notable for being one of the founding fathers of Federation and for his influence in early Australian politics.