There have been 122 women in the Australian Senate since the establishment of the Parliament of Australia. Women have had the right to stand for federal parliament since 1902, and there were three female candidates for the Senate at the 1903 federal election. However, it was not until Dorothy Tangney's victory at the 1943 federal election that a woman was elected. Since then, all states and territories have had multiple female senators – in chronological order: Western Australia (1943), Queensland (1947), Victoria (1950), South Australia (1955), Tasmania (1975), the Australian Capital Territory (1975), New South Wales (1987), and the Northern Territory (1998).

The Senate is the upper house of the bicameral Parliament of Australia, the lower house being the House of Representatives. The composition and powers of the Senate are established in Chapter I of the Constitution of Australia. There are a total of 76 senators: 12 are elected from each of the six Australian states regardless of population and 2 from each of the two self-governing internal Australian territories. Senators are popularly elected under the single transferable vote system of proportional representation.