List of people who have served in both Houses of the Australian Parliament

This is a list of Members of the Australian Parliament who have served in both the Senate and the House of Representatives.

Section 43 of the Constitution of Australia says: "A member of either House of the Parliament shall be incapable of being chosen or of sitting as a member of the other House".

Consequently, a member of one house who wishes to transfer to the other house must resign from the first house before the election or appointment to the other house. A person may simultaneously stand for election to both houses, and if successful in both bids, must choose which house he or she will be a member of. No person has ever successfully stood for election to both houses at the same time.

The following list comprises 49 people (44 men and 5 women). Of these:

The first person to have been a member of both houses was James McColl (Victoria), on 1 January 1907. All the other states and territories are represented in the list, the first person from each being:

The first woman to have been a member of both houses was Kathy Sullivan (Qld), on 1 December 1984.

In the 45th Parliament, three senators (David Fawcett, Pauline Hanson and Deborah O'Neill) were previously members of the House of Representatives, and three members of the House of Representatives (David Feeney, Barnaby Joyce and Matt Thistlethwaite) were previously senators.

Only two people have gone from one house to another and later returned to the first house:

No member of this list has yet served the Parliament for an aggregate period of 30 years or more. The longest-serving person who has been a member of both houses was Bronwyn Bishop, who was in the Senate for 6 years 229 days, and in the House of Representatives for 22 years 44 days, a total of 28 years 274 days. The shortest-serving person was Thomas Marwick (1 year 65 days in the Senate; 2 years 244 days in the House of Representatives; a total of 3 years 309 days).

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