Does the Australian Constitution define "marriage" as being between a man and a woman?
Commonwealth of Australia Constitution Act, 1900: Original Public Record Copy (1900).
Parliament House Art Collection, Art Services Parliament House
Description
This image shows the front page of the original public record copy of the Commonwealth of Australia Constitution Act 1900. There is a a red ribbon tied in a bow on the left hand side of the document. The paper looks faded from age.
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Section 51(xxi) of the Australian Constitution gives the Australian Parliament the power to make laws about marriage. It does not say what marriage is but it does indicate who cannot get married (eg people who are related). In 2017 gender-neutral language was introduced to allow people of the same sex to marry.
The details of how marriages are conducted in Australia are contained in the Marriage Act 1961.