John Newcombe defeated 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. It was his seventh and last major singles title. 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.

• Q = Qualifier
• WC = Wild card
• LL = Lucky loser
• r = Retired

	Quarterfinals									Semifinals									Final
	1	Jimmy Connors	6	6	6
		Kim Warwick	3	2	2
										1	Jimmy Connors	6	6	6
											Dick Crealy	4	3	4
	4	John Alexander	3	6	3	6
		Dick Crealy	6	4	6	7
																			1	Jimmy Connors	5	6	4	6
																			2	John Newcombe	7	3	6	7
	6	Alex Metreveli	6	6	4	3
	3	Tony Roche	7	3	6	6
										3	Tony Roche	4	6	4	6	9
										2	John Newcombe	6	4	6	2	11
	7	Geoff Masters	6	3	7	3	8
	2	John Newcombe	1	6	6	6	10

	First round									Second round									Third round									Quarterfinals
	1	J Connors	7	6	6
		C Kachel	5	2	3					1	J Connors	6	6	6
		U Pinner	6	7	6						U Pinner	3	3	2
		K Tanabe	1	6	3														1	J Connors	6	6	5	6
		GR Reid	6	6	6	6														GR Reid	2	3	7	0
		G Braun	1	7	2	1					GR Reid	7	4	6	6
		J Singh	6	7	6						J Singh	6	6	3	3
		A Dawson	2	6	0																							1	J Connors	6	6	6
		G Thomson	6	6	6																								K Warwick	3	2	2
		M Prineas	4	3	3						G Thomson	3	4	6
		K Warwick	6	6	6						K Warwick	6	6	7
		K Hiskins	1	3	2															K Warwick	4	4	7	6	6
		H Elschenbroich	7	6	6															H Elschenbroich	6	6	6	4	2
		N Špear	6	3	3						H Elschenbroich	4	6	6	6
		H Gauvain	4	2	3					8	P Dent	6	4	4	3
	8	P Dent	6	6	6

	First round									Second round									Third round									Quarterfinals
	4	J Alexander	3	7	6	6
		P Doerner	6	5	2	4				4	J Alexander	6	6	4	6
		M Edmondson	6	6	1	6	6				M Edmondson	3	4	6	1
		T Sakai	1	2	6	7	4												4	J Alexander	6	6	7
		J James	6	7	6															A Stone	2	4	5
		S Segura	2	6	3						J James	4	6	7	6
		A Stone	6	6	6						A Stone	6	7	6	8
		S Myers	4	4	3																							4	J Alexander	3	6	3	6
		W Bowrey	6	6	6																								D Crealy	6	4	6	7
		S Kato	3	0	3						W Bowrey	2	3	1
		J Andrews	6	7	6						J Andrews	6	6	6
		G Perkins	3	6	3															J Andrews	2	4	6	6
		D Crealy	7	2	7	6														D Crealy	6	6	4	7
		J Kuki	5	6	5	3					D Crealy	6	6	7
		R Ruffels	4	6	6	6					R Ruffels	3	4	6
	5	R Case	6	3	4	2

	First round									Second round									Third round									Quarterfinals
	6	A Metreveli	6	5	7	4	9
		S Ball	4	7	5	6	7			6	A Metreveli	6	6	6
		M Robinson	6	5	7	7					M Robinson	3	1	0
		K Hirai	1	7	5	6													6	A Metreveli	6	6	7	6
		E Ewert	2	6	6	6														C Letcher	4	7	6	4
		D Carter	6	2	3	3					E Ewert	2	2	3
		C Letcher	3	7	7	6					C Letcher	6	6	6
		J Eastburn	6	6	5	0																						6	A Metreveli	6	6	4	3
		J Loyo-Mayo	7	6	6																							3	T Roche	7	3	6	6
		N Fraser	6	4	4						J Loyo-Mayo	6	3	2	1
		P McNamara	6	6	7						P McNamara	3	6	6	6
		D Stojović	1	2	5															P McNamara	6	5	2	3
		C Dibley	6	6	6														3	T Roche	4	7	6	6
		W Durham	3	4	2						C Dibley	1	3	3
		M Machette	5	4	3					3	T Roche	6	6	6
	3	T Roche	7	6	6

	First round									Second round									Third round									Quarterfinals
	7	G Masters	6	6	6	7
		R Keldie	3	4	7	5				7	G Masters	6	6	6
		F Sedgman	6	5	6	6					F Sedgman	1	4	3
		R Lewis	3	7	4	3													7	G Masters	6	6	4
		P Beust	w/o																	B Giltinan	0	7	3r
		K Johansson									P Beust	0	3	2
		B Giltinan	7	6	7						B Giltinan	6	6	6
		J Trickey	5	4	6																							7	G Masters	6	3	7	3	8
		B Carmichael	6	6	6	6																						2	J Newcombe	1	6	6	6	10
		U Marten	7	2	3	3					B Carmichael	6	6	6
		S Menon	7	4	7	6					S Menon	4	2	2
		W Coghlan	6	6	6	1														B Carmichael	6	3	2
		R Gehring	6	6	6														2	J Newcombe	7	6	6
		C Stubs	3	2	4						R Gehring	7	4	6	2	4
		T Fancutt	2	1	2					2	J Newcombe	6	6	3	6	6
	2	J Newcombe	6	6	6

• Association of Tennis Professionals (ATP) – 1975 Australian Open Men's Singles draw
• Australian Open (1975) on ausopen.com Archived 2015-01-22 at the Wayback Machine
• 1975 Australian Open – Men's draws and results at the International Tennis Federation