# Members of the Australian Senate, 2005–2008

   Senate composition at 1 July 2005 Government (39) – (1 seat majority)  Liberal (33)
    National Party (5)
    Country Liberal (1)
   Opposition (28)  Labor (28)
   Crossbench (9)
    Greens (4)
    Democrats (4)
    Family First (1)
This is a list of members of the Australian Senate from 1 July 2005 to 30 June 2008. Half of the state senators had been elected at the November 2001 election and had terms due to finish on 30 June 2008; the other half of the state senators were elected at the October 2004 election and had terms due to finish on 30 June 2011. The territory senators were elected at the October 2004 election and their terms ended at the next federal election, which was November 2007. The new Senate first met in August 2005, with state senators elected in 2004 sworn in on 9 August 2005.
This election was the beginning of the end for the Australian Democrats, in that while they still had 4 senators from the 2001 election, they failed to win a single senate seat at the 2004 election and have not won a senate seat since.
| Senator | Party | State | Term ending | Years in office |
| Eric Abetz | Liberal | Tasmania | 2011 | 1994–2022 |
| Judith Adams | Liberal | Western Australia | 2011 | 2005–2012 |
| Lyn Allison | Democrats | Victoria | 2008 | 1996–2008 |
| Guy Barnett | Liberal | Tasmania | 2011 | 2002–2011 |
| Andrew Bartlett | Democrats | Queensland | 2008 | 1997–2008, 2017–2018 |
| Cory Bernardi | Liberal | South Australia | 2008 | 2006–2020 |
| Simon Birmingham | Liberal | South Australia | 2008 | 2007–2025 |
| Mark Bishop | Labor | Western Australia | 2008 | 1996–2014 |
| Ron Boswell | National | Queensland | 2008 | 1983–2014 |
| Sue Boyce | Liberal | Queensland | 2008 | 2007–2014 |
| George Brandis | Liberal | Queensland | 2011 | 2000–2018 |
| Bob Brown | Greens | Tasmania | 2008 | 1996–2012 |
| Carol Brown | Labor | Tasmania | 2008 | 2005–present |
| David Bushby | Liberal | Tasmania | 2008 | 2007–2019 |
| Paul Calvert | Liberal | Tasmania | 2008 | 1987–2007 |
| George Campbell | Labor | New South Wales | 2008 | 1997–2008 |
| Ian Campbell | Liberal | Western Australia | 2011 | 1990–2007 |
| Kim Carr | Labor | Victoria | 2011 | 1993–2022 |
| Grant Chapman | Liberal | South Australia | 2008 | 1987–2008 |
| Richard Colbeck | Liberal | Tasmania | 2008 | 2002–2016, 2018–present |
| Jacinta Collins | Labor | Victoria | 2008 | 1995–2005, 2008–2019 |
| Stephen Conroy | Labor | Victoria | 2011 | 1996–2016 |
| Helen Coonan | Liberal | New South Wales | 2008 | 1996–2011 |
| Mathias Cormann | Liberal | Western Australia | 2011 | 2007–2020 |
| Trish Crossin | Labor | Northern Territory | 2007, 2010 | 1998–2013 |
| Alan Eggleston | Liberal | Western Australia | 2008 | 1996–2014 |
| Chris Ellison | Liberal | Western Australia | 2011 | 1993–2009 |
| Chris Evans | Labor | Western Australia | 2011 | 1993–2013 |
| John Faulkner | Labor | New South Wales | 2011 | 1989–2015 |
| Alan Ferguson | Liberal | South Australia | 2011 | 1992–2011 |
| Jeannie Ferris | Liberal | South Australia | 2008 | 1996–2007 |
| Steve Fielding | Family First | Victoria | 2011 | 2005–2011 |
| Concetta Fierravanti-Wells | Liberal | New South Wales | 2011 | 2005–2022 |
| Mitch Fifield | Liberal | Victoria | 2008 | 2004–2019 |
| Mary Jo Fisher | Liberal | South Australia | 2011 | 2007–2012 |
| Michael Forshaw | Labor | New South Wales | 2011 | 1994–2011 |
| Bill Heffernan | Liberal | New South Wales | 2011 | 1996–2016 |
| Robert Hill | Liberal | South Australia | 2008 | 1981–2006 |
| John Hogg | Labor | Queensland | 2008 | 1996–2014 |
| Gary Humphries | Liberal | Australian Capital Territory | 2007, 2010 | 2003–2013 |
| Annette Hurley | Labor | South Australia | 2011 | 2005–2011 |
| Steve Hutchins | Labor | New South Wales | 2011 | 1999–2011 |
| David Johnston | Liberal | Western Australia | 2008 | 2002–2016 |
| Barnaby Joyce | National | Queensland | 2011 | 2005–2013 |
| Rod Kemp | Liberal | Victoria | 2008 | 1990–2008 |
| Linda Kirk | Labor | South Australia | 2008 | 2002–2008 |
| Ross Lightfoot | Liberal | Western Australia | 2008 | 1997–2008 |
| Joe Ludwig | Labor | Queensland | 2011 | 1999–2016 |
| Kate Lundy | Labor | Australian Capital Territory | 2007, 2010 | 1996–2015 |
| Ian Macdonald | Liberal | Queensland | 2008 | 1990–2019 |
| Sandy Macdonald | National | New South Wales | 2008 | 1993–1999, 2000–2008 |
| Sue Mackay | Labor | Tasmania | 2008 | 1996–2005 |
| Gavin Marshall | Labor | Victoria | 2008 | 2002–2019 |
| Brett Mason | Liberal | Queensland | 2011 | 1999–2015 |
| Anne McEwen | Labor | South Australia | 2011 | 2005–2016 |
| Julian McGauran | National/Liberal | Victoria | 2011 | 1987–1990, 1993–2011 |
| Jan McLucas | Labor | Queensland | 2011 | 1999–2016 |
| Christine Milne | Greens | Tasmania | 2011 | 2005–2015 |
| Nick Minchin | Liberal | South Australia | 2011 | 1993–2011 |
| Claire Moore | Labor | Queensland | 2008 | 2002–2019 |
| Andrew Murray | Democrats | Western Australia | 2008 | 1996–2008 |
| Fiona Nash | National | New South Wales | 2011 | 2005–2017 |
| Kerry Nettle | Greens | New South Wales | 2008 | 2002–2008 |
| Kerry O'Brien | Labor | Tasmania | 2011 | 1996–2011 |
| Stephen Parry | Liberal | Tasmania | 2011 | 2005–2017 |
| Kay Patterson | Liberal | Victoria | 2008 | 1987–2008 |
| Marise Payne | Liberal | New South Wales | 2008 | 1997–2023 |
| Helen Polley | Labor | Tasmania | 2011 | 2005–present |
| Robert Ray | Labor | Victoria | 2008 | 1981–2008 |
| Michael Ronaldson | Liberal | Victoria | 2011 | 2005–2016 |
| Santo Santoro | Liberal | Queensland | 2008 | 2002–2007 |
| Nigel Scullion | Country Liberal | Northern Territory | 2007, 2010 | 2001–2019 |
| Nick Sherry | Labor | Tasmania | 2008 | 1990–2012 |
| Rachel Siewert | Greens | Western Australia | 2011 | 2005–2021 |
| Ursula Stephens | Labor | New South Wales | 2008 | 2002–2014 |
| Glenn Sterle | Labor | Western Australia | 2011 | 2005–present |
| Natasha Stott Despoja | Democrats | South Australia | 2008 | 1995–2008 |
| Judith Troeth | Liberal | Victoria | 2011 | 1993–2011 |
| Russell Trood | Liberal | Queensland | 2011 | 2005–2011 |
| Amanda Vanstone | Liberal | South Australia | 2011 | 1984–2007 |
| John Watson | Liberal | Tasmania | 2008 | 1978–2008 |
| Ruth Webber | Labor | Western Australia | 2008 | 2002–2008 |
| Penny Wong | Labor | South Australia | 2008 | 2002–present |
| Dana Wortley | Labor | South Australia | 2011 | 2005–2011 |