See main article: 1975 Australian Open.
John Newcombe defeated the defending champion Jimmy Connors in the final, 7–5, 3–6, 6–4, 7–6(9–7) to win the men's singles tennis title at the 1975 Australian Open. Newcombe became the first man in the Open Era to win a major after saving match points, saving three against Tony Roche in the semifinals.
The seeded players are listed below. John Newcombe is the champion; others show the round in which they were eliminated.