Crocus

Five-time defending champion Esther Vergeer defeated Aniek van Koot in the final, 6–2, 6–1 to win the women's singles wheelchair tennis title at the 2011 US Open.

1. Esther Vergeer (champion)
2. Jiske Griffioen (semifinals)

	Quarterfinals							Semifinals							Finals
	1	Esther Vergeer	6	6
		Marjolein Buis	1	0
								1	Esther Vergeer	6	6
									Annick Sevenans	2	3
		Daniela di Toro	3	3
		Annick Sevenans	6	6
															1	Esther Vergeer	6	6
																Aniek van Koot	2	1
		Aniek van Koot	7	6
		Sharon Walraven	5	1
									Aniek van Koot	6	6
								2	Jiske Griffioen	3	2
	WC	Emmy Kaiser	2	2
	2	Jiske Griffioen	6	6

• Main Draw