The MP behind New Zealand's same-sex marriage legislation is "incredibly proud of Australia" for voting 'yes' in a nationwide postal survey.
Labour MP Louisa Wall says she felt "joy" and "celebration", when she saw the result, "like you would if you'd won a World Cup".
More than 12.7 million Australians took part in the controversial survey - a majority of 61.6 percent voted 'yes', while 38.4 percent voted 'no'.
"For some of their activists, this has been a lifelong pursuit to get equality and to be recognised as equal citizens in their country," Ms Wall said.
She said the Australian parliament must act on the result of the non-binding postal survey.
"The Australian public were asked a very serious question and they have now answered it, and it's really incumbent, in my perspective, on their politicians and their parliament to fulfil the wishes of the Australian people."
Australian Prime Minister Malcolm Turnbull has promised to get same-sex marriage legislation passed by Christmas.
Ms Wall submitted a bill to legalise same-sex marriage in New Zealand in 2012.
The bill was passed into law in April 2013, making New Zealand the 13th nation in the world to legalise same-sex marriage.