The 1973 Australian Indoor Championships was a men's tennis tournament played on indoor hard courts at the Hordern Pavilion in Sydney in Australia. It was part of the 1973 Commercial Union Assurance Grand Prix as a Group B category tournament. The tournament was held from 4 November through 11 November 1973.
Rod Laver defeated John Newcombe 3–6, 7–5, 6–3, 3–6, 6–4
- It was Laver's 14th title of the year and the 50th of his career.
Rod Laver / John Newcombe defeated Mal Anderson / Ken Rosewall 7–6, 6–2
- It was Laver's 13th title of the year and the 49th of his career. It was Newcombe's 10th title of the year and the 48th of his career.
- ^ John Barrett, ed. (1974). World of Tennis '74. London: Queen Anne Press. p. 121. ISBN 9780362001686.