1st Edmund Barton 1-1-1901 24-9-1903 Protectionist
2nd Alfred Deakin 24-9-1903 27-4-1904 Protectionist
3rd John Christian Watson 27-4-1904 17-8-1904 Commonwealth Labor
4th George Houston Reid 17-8-1904 5-7-1905 Free Trade
5th Alfred Deakin 5-7-1905 10-11-1908 Protectionist
6th Andrew Fisher 10-11-1908 29-4-1909 Commonwealth Labor
7th Alfred Deakin 29-4-1909 13-4-1910 Protectionist
8th Andrew Fisher 13-4-1910 24-6-1913 Commonwealth Labor
9th Joseph Cook 24-6-1913 5-9-1914 Liberal
10th Andrew Fisher 5-9-1914 27-10-1915 Commonwealth Labor
11th William Morris Hughes 27-10-1915 9-2-1923 Australian Labor, National Labor, National
12th Stanley Melbourne Bruce 9-2-1923 12-10-1929 National
13th James Henry Scullin 12-10-192919-12-1931 Australian Labor
14th Josepgh Aloysius Lyons 19-12-193 17-4-1939 United Australia
15th Earle Christmas Page 7-4-1939 26-4-1939 Country
16th Robert Gordon Menzies 26-4-1939 28-8-1941 United Australia
17th Arthur William Fadden 28-8-194 17-10-1941Country
18th John Joseph Curtin 7-10-1941 5-7-1945 Australian Labor
19th Francis Michael Forde 5-7-1945 12-7-1945 Australian Labor
20th Joseph Benedict Chifley 12-7-1945 10-12-1949 Australian Labor
21st Robert Gordon Menzies 10-12-1949 20-1-1966 Liberal
22nd Harold Edward Holt 20-1-1966 17-12-1967 Liberal
23rd John McEwan 17-12-1967 9-1-1968
24th John Grey Gorton 9-1-1968 22-3-1971 Liberal
25th William McMahon 22-3-197 12-12-1972 Liberal
26th Edward Gough Whitlam 2-12-1972 11-11-1975 Australian Labor
27th John Malcolm Fraser 11-11-1975 5-3-1983 Liberal
28th Robert James Hawke 5-3-1983 20-12-1991 Australian Labor
29th Paul John Keating 20-12-1991 12-3-1996 Australian Labor
30th John Winston Howard 2-3-1996 Liberal

also see ... The Australian Political System