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.

Seniors

Men's singles

🇦🇺 John Newcombe defeated 🇳🇿 Onny Parun, 6–3, 6–7, 7–5, 6–1

Women's singles

🇦🇺 Margaret Court defeated 🇦🇺 Evonne Goolagong, 6–4, 7–5

Men's doubles

🇦🇺 John Newcombe / 🇦🇺 Malcolm Anderson defeated 🇦🇺 John Alexander / 🇦🇺 Phil Dent, 6–3, 6–4, 7–6

Women's doubles

🇦🇺 Margaret Court / 🇬🇧 Virginia Wade defeated 🇦🇺 Kerry Harris / 🇦🇺 Kerry Melville, 6–4, 6–4

Mixed doubles