Mixed doubles
1991 US Open
Final
Champions	Manon Bollegraf Tom Nijssen
Runners-up	Arantxa Sánchez Vicario Emilio Sánchez
Score	6–2, 7–6(7–2)
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
← 1990 · US Open · 1992 →

Elizabeth Smylie and Todd Woodbridge were the defending champions but they competed with different partners that year, Smylie with John Fitzgerald and Woodbridge with Nicole Provis.

Smylie and Fitzgerald lost in the second round to Elna Reinach and Christo van Rensburg.

Provis and Woodbridge lost in the quarterfinals to Manon Bollegraf and Tom Nijssen.

Bollegraf and Nijssen won in the final 6–2, 7–6^(7–2) against Arantxa Sánchez Vicario and Emilio Sánchez.

Champion seeds are indicated in bold text while text in italics indicates the round in which those seeds were eliminated.

	Final
		Manon Bollegraf Tom Nijssen	6	77
	2	Arantxa Sánchez Vicario Emilio Sánchez	2	62

	First round							Second round							Quarterfinals							Semifinals
	1	E Smylie J Fitzgerald	6	77
		Z Garrison R Leach	4	63				1	E Smylie J Fitzgerald	6	2	5
		A May P Galbraith	3	7	2				E Reinach C van Rensburg	2	6	7
		E Reinach C van Rensburg	6	5	6											E Reinach C van Rensburg	3	6	6
		K Adams S Cannon	77	4	77											K Adams S Cannon	6	3	3
		L McNeil B Shelton	63	6	65				K Adams S Cannon	77	2	6
		R Jensen L Jensen	3	4				6	P Fendick M Woodforde	64	6	3
	6	P Fendick M Woodforde	6	6																			E Reinach C van Rensburg	6	66	4
	4	N Zvereva J Pugh	1	4																			M Bollegraf T Nijssen	4	78	6
		H Suková C Suk	6	6					H Suková C Suk	64	6	3
		L Gregory K Kinnear	4	2					M Bollegraf T Nijssen	77	4	6
		M Bollegraf T Nijssen	6	6												M Bollegraf T Nijssen	77	6
		M L Daniels L Pimek	5	7	3										8	N Provis T Woodbridge	64	3
		L Savchenko S Salumaa	7	5	6				L Savchenko S Salumaa	4	3
		P Shriver M Kratzmann	6	2	3			8	N Provis T Woodbridge	6	6
	8	N Provis T Woodbridge	3	6	6

	First round							Second round							Quarterfinals							Semifinals
	7	G Magers T Witsken	6	6
		J-A Faull P Norval	3	4				7	G Magers T Witsken	2	0
		A Smith K Jones	3	65					J Durie L Warder	6	6
		J Durie L Warder	6	77												J Durie L Warder	77	77
		R Fairbank-Nideffer S Melville	6	6											3	J Hetherington G Michibata	64	64
		D Graham J Palmer	3	3					R Fairbank-Nideffer S Melville	4	4
		A Frazier R Smith	77	1	5			3	J Hetherington G Michibata	6	6
	3	J Hetherington G Michibata	63	6	7																		J Durie L Warder	2	2
	5	R White D Visser	6	3	6																	2	A Sánchez Vicario E Sánchez	6	6
		E Burgin R Bergh	3	6	4			5	R White D Visser	4	77	6
		B Schultz M Schapers	3	4					M Paz L Lavalle	6	65	4
		M Paz L Lavalle	6	6											5	R White D Visser	4	5
		E Pfaff N Brown	6	6											2	A Sánchez Vicario E Sánchez	6	7
		M Pierce J Lozano	0	4					E Pfaff N Brown	0	5
		R McQuillan D Macpherson	4	64				2	A Sánchez Vicario E Sánchez	6	7
	2	A Sánchez Vicario E Sánchez	6	77

• 1991 US Open – Doubles draws and results at the International Tennis Federation