1973 Australian Open – Men's Singles
| Men's Singles | |
|---|---|
| 1973 Australian Open | |
| Champion |
 John Newcombe
|
| Runner-up |
 Onny Parun
|
| Final score | 6–3, 6–7, 7–5, 6–1 |
Ken Rosewall was the two time defending champion, but was upset in the second round by unseeded Karl Meiler.
John Newcombe defeated Onny Parun 6–3, 6–7, 7–5, 6–1 in the final to win the Men's Singles tennis title at the 1973 Australian Open.
The format was the first round was best of 3 sets and the rest of the tournament was best of 5 sets.
The seeded players are listed below. John Newcombe is the champion; others show the round in which they were eliminated.
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