Françoise Dürr and Darlene Hard were the defending champions but competed this year with different partners. Françoise Dürr teamed up with Gail Chanfreau, and lost in the semifinals to Margaret Court and Judy Dalton. Darlene Hard teamed up with Peaches Bartkowicz, and lost in the quarterfinals to Françoise Dürr and Gail Chanfreau.

Margaret Court and Judy Dalton won the title by defeating Rosemary Casals and Virginia Wade 6–3, 6–4 in the final.^[1]

	Semifinals							Final
	1	Margaret Court Judy Dalton	7	6	7
	4	Gail Chanfreau Françoise Dürr	6	7	5
								1	Margaret Court Judy Dalton	6	6
								2	Rosie Casals Virginia Wade	3	4
		Carole Graebner Kerry Melville	2	2
	2	Rosie Casals Virginia Wade	6	6

	First round							Second round							Quarterfinals							Semifinals
	1	M Court J Dalton	6	6
		E Emmanuel C Martinez	2	0				1	M Court J Dalton	6	6
		L Tenney L Tuero	1	3					G Hansen S Walsh	1	1
		G Hansen S Walsh	6	6											1	M Court J Dalton	6	6
		J Newberry E Pande	4	5												S Johnson K Kemmer	0	2
		C Molesworth N Truman	6	7					C Molesworth N Truman	4	6	4
		P Bostrom F Footman	1	3					S Johnson K Kemmer	6	2	6
		S Johnson K Kemmer	6	6																		1	M Court J Dalton	7	6	7
	4	G Chanfreau F Dürr	6	6	6																	4	G Chanfreau F Dürr	6	7	5
		P Faulkner S Holdsworth	7	1	1			4	G Chanfreau F Dürr	6	3	7
		M-A Curtis V Ziegenfuss	2	6	6				M-A Curtis V Ziegenfuss	3	6	5
		L Kaligis L Liem	6	2	3										4	G Chanfreau F Dürr	6	3	7
		H Gourlay P Walkden	6	3	6											P Bartkowicz D Hard	4	6	6
		L Hunt K Pigeon	4	6	3				H Gourlay P Walkden	6	4
		D Knode H Parez	2	1					P Bartkowicz D Hard	7	6
		P Bartkowicz D Hard	6	6

	First round							Second round							Quarterfinals							Semifinals
		D Carter P Teeguarden	6	6
		L duPont M Gengler	4	1					D Carter P Teeguarden	6	4	4
		P Austin M Cooper	1	3					K Harris P Hogan	2	6	6
		K Harris P Hogan	6	6												K Harris P Hogan	3	7	6
		A Lebedeff T O'Shaughnessy	6	6	6											C Graebner K Melville	6	5	7
		S Barman B Vest	7	4	4				A Lebedeff T O'Shaughnessy	1	2
									C Graebner K Melville	6	6
																							C Graebner K Melville	2	2
		C Murakami J O'Hara	w/o																			2	R Casals V Wade	6	6
		C Capozzi P Farmer							C Murakami J O'Hara	1	5
		M Kroschina O Morozova	7	4	6				M Kroschina O Morozova	6	7
		P Reese S Stap	5	6	4											M Kroschina O Morozova	2	1
		I Bentzer C Sandberg	6	6											2	R Casals V Wade	6	6
		B-A Hansen M Johnson	2	2					I Bentzer C Sandberg	0	2
		P Cody C Spinoza	2	2				2	R Casals V Wade	6	6
	2	R Casals V Wade	6	6

• 1970 US Open – Women's draws and results at the International Tennis Federation