The 1973 Australian Open was a tennis tournament played on outdoor grass courts at the Kooyong Lawn Tennis Club in Melbourne in Australia and was held from 26 December 1972 to 1 January 1973.

It was the 61st edition of the Australian Open and the first Grand Slam tournament of the year.

John Newcombe defeated Onny Parun, 6–3, 6–7, 7–5, 6–1 [1] Margaret Court defeated Evonne Goolagong, 6–4, 7–5 [2] John Newcombe / Malcolm Anderson defeated John Alexander / Phil Dent, 6–3, 6–4, 7–6 [3] Margaret Court / Virginia Wade defeated Kerry Harris / Kerry Melville, 6–4, 6–4 [4]