- Labor Leader - 8 May 1901 - 30 October 1907
- Labor Prime Minister - 27 April 1904 - 17 August 1904
- Labor Leader - 30 October 1907 - 30 October 1915
- Labor Prime Minister :
- 13 November 1908 - 2 June 1909
- 29 April 1910 - 24 June 1913
- 17 September 1914 - 27 October 1915
The Rt Hon William Morris Hughes
- Labor Leader - 30 October 1915 - 14 November 1916
- Labor Prime Minister - 27 October 1915 - 14 November 1916
- Labor Leader - 15 November 1916 - 10 January 1922
- Labor Leader - 16 May 1922 - 29 March 1928
The Rt Hon James Henry Scullin
- Labor Leader - 26 April 1928 - 1 October 1935
- Labor Prime Minister - 22 October 1929 - 6 January 1932
The Rt Hon John Joseph Ambrose Curtin
- Labor Leader - 1 October 1935 - 5 July 1945
- Labor Prime Minister - 7 October 1941 - 5 July 1945
The Rt Hon Francis Michael Forde
- Labor Leader - 6 July 1945 - 12 July 1945
- Labor Prime Minister - 6 July 1945 - 13 July 1945
The Rt Hon Joseph Benedict Chifley
- Labor Leader - 12 July 1945 - 13 June 1951
- Labor Prime Minister - 13 July 1945 - 19 December 1949
- Labor Leader - 20 June 1951 - 7 March 1960
The Hon Arthur Augustus Calwell
- Labor Leader - 7 March 1960 - 8 February 1967
- Labor Leader - 8 February 1967 - 22 December 1977
- Labor Prime Minister - 5 December 1972 - 11 November 1975
- Labor Leader - 22 December 1977 - 3 February 1983
The Hon Robert James Lee Hawke
- Labor Leader - 3 February 1983 - 19 December 1991
- Labor Prime Minister - 11 March 1983 - 20 December 1991
- Labor Leader - 19 December 1991 - 19 March 1996
- Labor Prime Minister - 20 December 1991 - 11 March 1996
- Labor Leader - 19 March 1996 - 22 November 2001
- Labor Leader - 22 November 2001 - 2 December 2003
- Labor Leader - 2 December 2003 - 18 January 2005
- Labor Leader - 28 January 2005 - 4 December 2006
- Labor Leader - 4 December 2006 - 24 November 2007
- Prime Minister - 24 November 2007 -