Men's singles
1971 US Open
Final
Champion	Stan Smith
Runner-up	Jan Kodeš
Score	3–6, 6–3, 6–2, 7–6(5–3)
Details
Draw	128
Seeds	8
Events
Singles men women boys girls Doubles men women mixed boys girls WC Singles men women quad WC Doubles men women quad Legends men women mixed
← 1970 · US Open · 1972 →

Stan Smith defeated Jan Kodeš in the final, 3–6, 6–3, 6–2, 7–6^(5–3) to win the men's singles tennis title at the 1971 US Open. It was his first major singles title.

Ken Rosewall was the reigning champion, but did not compete this year. Tony Roche, the previous year's runner-up, also did not compete in the tournament this year. The absence of both the previous year's finalists would not happen again at the US Open until 2017, 46 years later.

The seeded players are listed below. Stan Smith is the champion; others show the round in which they were eliminated.

1. John Newcombe (first round)
2. Stan Smith (champion)
3. Arthur Ashe (semifinalist)
4. Tom Okker (semifinalist)
5. Marty Riessen (quarterfinalist)
6. Cliff Richey (third round)
7. Clark Graebner (quarterfinalist)
8. Ilie Năstase (third round)

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

	Quarterfinals									Semifinals									Final
		Jan Kodeš	6	7	6
		Frank Froehling	0	6	3
											Jan Kodeš	7	3	4	6	6
										3	Arthur Ashe	6	6	6	3	4
	3	Arthur Ashe	6	6	7
		Manuel Orantes	1	2	6
																				Jan Kodeš	6	3	2	63
																			2	Stan Smith	3	6	6	75
	7	Clark Graebner	2	3	4
	4	Tom Okker	6	6	6
										4	Tom Okker	6	3	6	6	3
										2	Stan Smith	7	6	3	2	6
	5	Marty Riessen	6	2	6
	2	Stan Smith	7	6	7

	First round									Second round									Third round									Fourth round
	1	Newcombe	6	6	6	3
		Kodeš	2	7	7	6					Kodeš	2	5	6	6	6
		Howard	4	2	5						Barthès	6	7	4	4	3
		Barthès	6	6	7															Kodeš	6	6	6
		Seewagen	6	2	6	6														Seewagen	4	2	3
		Proisy	1	6	4	4					Seewagen	6	3	6	6	6
		Austin	6	6	6						Austin	2	6	7	4	2
		Burrman	3	1	1																								Kodeš	6	6	6
		Lutz	6	6	6																								Lutz	4	2	4
		Stilwell	0	4	4						Lutz	6	7	6
		El Shafei	4	6	4	2					Battrick	3	5	4
		Battrick	6	2	6	6														Lutz	6	6	6	3	6
		McNair	4	6	6	6														Parun	4	7	3	6	2
		Pála	6	4	4	4					McNair	4	6	6	2	4
		Parun	6	3	6	6					Parun	6	4	4	6	6
		Stewart	3	6	2	3

	First round									Second round									Third round									Fourth round
	8	Năstase	6	7	6
		Loyo-Mayo	2	5	4					8	Năstase	6	6	6
		Borowiak	6	3	6	7					Borowiak	2	4	4
		Guerry	3	6	1	5													8	Năstase	3	3	6
		Carmichael	6	6	7	6														Carmichael	6	6	7
		Muñoz	3	7	6	4					Carmichael	5	7	6	1	7
		Ryan	5	6	2						Stockton	7	6	4	6	5
		Stockton	7	7	6																								Carmichael	6	4	4
		Froehling	6	6	6																								Froehling	7	6	6
		Fassbender	3	3	3						Froehling	7	4	6	6	6
		Pattison	6	7	6						Pattison	5	6	7	3	4
		Brien	3	5	1															Froehling	7	5	6	7
		Cooper	6	3	6	4	6													Tanner	6	7	3	6
		Masters	4	6	2	6	3				Cooper	7	6	7	5	3
		Tanner	6	6	6						Tanner	5	7	6	7	6
		Paish	4	3	0

	First round									Second round									Third round									Fourth round
	3	Ashe	6	6	6
		Knight	3	4	1					3	Ashe	6	6	6
		Krulevitz	7	6	3	6	6				Krulevitz	2	1	1
		Estep	5	2	6	7	4												3	Ashe	7	6	6
		Cox	7	6	7															Cox	5	2	2
		Keldie	5	0	6						Cox	7	6	6
		Davidson	6	7	2	6					Davidson	6	4	0
		Maud	3	5	6	0																						3	Ashe	6	6	6	6
		Alexander	6	6	3	6																							Alexander	4	7	4	3
		McManus	3	4	6	4					Alexander	6	4
		Clifton	2	2	0						Stone	4	1	r
		Stone	6	6	6															Alexander	6	4	6	6
		Pohmann	1	4	6															Rahim	7	6	0	4
		Rahim	6	6	7						Rahim	2	3	6	6	6
		Gerken	6	6	3	2	6				Gerken	6	6	2	4	2
		Ruffels	4	1	6	6	3

	First round									Second round									Third round									Fourth round
	6	Richey	6	6	7
		Pasarell	4	4	5					6	Richey	7	6	6
		Mukerjea	6	7	7	7					Mukerjea	5	2	3
		Irvine	7	6	6	6													6	Richey	7	4	4	4
		Osborne	4	7	6	6														Osborne	6	6	6	6
		Giammalva Sr.	6	6	3	3					Osborne	6	1	6	6
		Koch	6	7	6	7					Koch	3	6	4	3
		Cornejo	3	6	2	6																							Osborne	6	2	2	3
		Gonzales	6	6	6	6																							Orantes	2	6	6	6
		R. Kreiss	7	4	4	4					Gonzales	7	7	6
		Matthews	6	6	7	7	6				Matthews	6	6	3
		Russell	7	7	6	6	3													Gonzales	6	4	4	1
		Orantes	6	7	6															Orantes	3	6	6	6
		Zednik	4	5	4						Orantes	6	6	4	6
		Álvarez	3	4	7	4					Holmberg	4	3	6	2
		Holmberg	6	6	6	6

	First round									Second round									Third round									Fourth round
		Fitzgibbon	3	7	7	6
		Dell	6	5	6	4					Fitzgibbon	6	6	6
		Kuki	6	7	3	6					Kuki	2	2	4
		Zuleta	0	5	6	4														Fitzgibbon	2	6	2
		Barth	3	3	0															Moore	6	7	6
		Moore	6	6	6						Moore	6	6	6
		Țiriac	7	4	5						Țiriac	3	2	4
		Gorman	5	6	5	r																							Moore	2	4	3
		Mayer	0	7	1	0																						7	Graebner	6	6	6
		Fillol Sr.	6	6	6	6					Fillol Sr.	6	6	6
		Gardner	6	3	7	1	6				Gardner	3	2	1
		Špear	4	6	6	6	2													Fillol Sr.	3	2	4
		Baer	3	3	2														7	Graebner	6	6	6
		Curtis	6	6	6						Curtis	1	4	1
		McMillan	7	4	1	3				7	Graebner	6	6	6
	7	Graebner	6	6	6	6

	First round									Second round									Third round									Fourth round
		Olmedo	6	7	4	5	5
		Connors	2	5	6	7	7				Connors	4	3	4
		Dibley	6	6	6						Dibley	6	6	6
		M. Kreiss	1	1	1															Dibley	4	6	1	4
		Scott	4	4	6	3														Taylor	6	3	6	6
		Vázquez	6	6	1	6					Vázquez	2	1	1
		Addison	6	1	4	2					Taylor	6	6	6
		Taylor	2	6	6	6																							Taylor	4	4	6	3
		Gerulaitis	4	6	6	4	1																					4	Okker	6	6	4	6
		Sakai	6	2	1	6	6				Sakai	6	7	6
		Lall	6	7	6	4					Case	3	6	3
		Case	7	6	7	6														Sakai	1	1	1
		Chanfreau	6	1	3														4	Okker	6	6	6
		Dent	7	6	6						Dent	4	3	3
		Bengtson	2	4	6	7	1			4	Okker	6	6	6
	4	Okker	6	6	3	6	6

	First round									Second round									Third round									Fourth round
		Brent	6	6	3	3	7
		Turner	3	2	6	6	5				Brent	5	4	1
		Bowrey	3	6	7	6	6				Bowrey	7	6	6
		Faulk	6	7	5	3	4													Bowrey	2	4	3
		Parker	6	3	4	4														Pilić	6	6	6
		Neely	2	6	6	6					Neely	6	6	3
		Goven	3	1	5						Pilić	7	7	6
		Pilić	6	6	7																								Pilić	5	6	6
		McKinley	6	4	2																							5	Riessen	7	7	7
		Van Dillen	7	6	6						Van Dillen	3	6	3	4
		Leschly	6	6	6						Leschly	6	3	6	6
		Cramer	1	1	3															Leschly	2	6	5	3
		Hirai	6	3	4														5	Riessen	6	4	7	6
		Hewitt	7	6	6						Hewitt	6	7	2	2
		Gottfried	7	2	4	6	3			5	Riessen	7	6	6	6
	5	Riessen	6	6	6	2	6

	First round									Second round									Third round									Fourth round
		Edlefsen	4	2	6	5
		Holmes	6	6	2	7					Holmes	6	6	6
		Pasarell	6	4	2	2					Sharpe	0	4	3
		Sharpe	3	6	6	6														Holmes	6	3	1	0
		Burwash	1	0	7	4														Holeček	2	6	6	6
		Holeček	6	6	5	6					Holeček	6	7	3	6
		Walthall	2	1	2						Ralston	3	6	6	4
		Ralston	6	6	6																								Holeček	6	2	r
		Franulović	6	6	6																							2	Smith	7	3
		Menon	4	0	3						Franulović	6	7	3	5	6
		Leonard	6	6	6						Leonard	4	6	6	7	7
		Higgins	2	3	4															Leonard	2	3	6	3
		Fairlie	6	7	6														2	Smith	6	6	4	6
		Lara	4	5	7	r					Fairlie	2	5	2
		Ramírez	0	2	6					2	Smith	6	7	6
	2	Smith	6	6	7

• Association of Tennis Professionals (ATP) – 1971 US Open Men's Singles draw
• 1971 US Open – Men's draws and results at the International Tennis Federation