1978 US Open – Women's singles qualifying

Players who neither had high enough rankings nor received wild cards to enter the main draw of the annual US Open Tennis Championships participated in a qualifying tournament held over several days before the event.^[1]

	First round							Second round							Qualifying competition
	1	Joyce Portman	6	6
	8	Leslie Allen	3	1
								Joyce Portman		2	3
								Felicia Hutnick		6	6
	4	Felicia Hutnick	6	6
	5	Paulina Peled	2	1
															Felicia Hutnick		6	6
															Naoko Sato		1	0
	2	Karen Dawson	3	6	6
	7	Nerida Gregory	6	2	3
								Karen Dawson		4	1
								Naoko Sato		6	6
	3	Naoko Sato	6	3	6
	6	Cynthia Ashling	3	6	4

	First round							Second round							Qualifying competition
	1	Bettina Bunge	6	6
	8	Marlie Buehler	2	0
								Bettina Bunge		6	6
								Trey Lewis		4	2
	4	Trey Lewis	6	6
	5	Lindsey Beaven	0	1
															Bettina Bunge		6	6
															Robin Harris		2	0
	2	Rita Agassi	6	3	6
	7	Lisa Doherty	1	6	0
								Rita Agassi		3	6	65
								Robin Harris		6	1	77
	3	Robin Harris	6	6
	6	Chris Newton	2	4

	First round							Second round							Qualifying competition
	1	Kim Sands	6	6
	8	Lili Bell	1	0
								Kim Sands		6	3	1
								Wendy White		4	6	6
	4	Wendy White	6	6
	5	Leanne Harrison	4	2
															Wendy White		6	7
															Sally Greer		3	5
	2	Susan Hagey	3	6	6
	7	Kaye Hallam	6	2	3
								Susan Hagey		1	3
								Sally Greer		6	6
	3	Sally Greer	6	6
	6	Beatrix Klein	3	0

	First round							Second round							Qualifying competition
	1	Ivanna Madruga	6	6
	8	Anne Fritz	1	0
								Ivanna Madruga		77	6
								Jean Nachand		65	2
	4	Jean Nachand	7	6
	5	Jane Preyer	5	2
															Ivanna Madruga		6	6
															Sue Mappin		4	2
	2	Kate Glancy	6	6
	7	Jenny Gardiner	3	3
								Kate Glancy		4	1
								Sue Mappin		6	6
	3	Sue Mappin	6	6
	6	Nancy Weigel	2	0

	First round							Second round							Qualifying competition
	1	Sonoe Yonezawa	3	6	6
	8	Margaret Riley	6	2	4
								Sonoe Yonezawa		6	6
								Anne Chevalier		2	1
	4	Anne Chevalier	1	6	6
	5	Nancy Ornstein	6	4	3
															Sonoe Yonezawa		6	0	6
															Silvana Urroz		4	6	2
	2	Silvana Urroz	6	6
	7	Brenda Perry	3	1
								Silvana Urroz		6	7
								Sherry Acker		1	5
	3	Sherry Acker	6	6
	6	Ingrid Löfdahl Bentzer	2	1

	First round							Second round							Qualifying competition
	1	Rayni Fox	6	6
	8	Gretchen Galt	3	3
								Rayni Fox		1	1
								Anna-Maria Fernandez		6	6
	4	Anna-Maria Fernandez	6	6
	5	Andrea Whitmore	4	3
															Anna-Maria Fernandez		6	6
															Kay McDaniel		3	1
	2	Nancy Yeargin	6	6
	7	Marcie Louie	1	4
								Nancy Yeargin		4	3
								Kay McDaniel		6	6
	3	Kay McDaniel	64	6	6
	6	Linda Siegel	77	3	2

	First round							Second round							Qualifying competition
	1	Elly Appel-Vessies	6	6
	8	Sue Stap	0	1
								Elly Appel-Vessies		6	6
								Kym Ruddell		1	0
	4	Kym Ruddell	3	6	6
	5	Lisa Kearney	6	3	4
															Elly Appel-Vessies		6	7
															Karen Hantze Susman		4	5
	2	Kathy O'Brien	6	6
	7	Lynn Jacobs	2	2
								Kathy O'Brien		65	1
								Karen Hantze Susman		77	6
	3	Karen Hantze Susman	6	6
	6	Dominique Beillan	3	2

	First round							Second round							Qualifying competition
	1	Renee Blount	6	6
	8	Heather Ludloff	3	1
								Renee Blount		4	2
								Diane Morrison		6	6
	4	Diane Morrison	7	6
	5	Jane Stratton	5	3
															Diane Morrison		1	0
															Kathy Jordan		6	6
	2	Sabina Simmonds	6	6
	7	Sandy Stap	4	4
								Sabina Simmonds		1	1
								Kathy Jordan		6	6
	3	Kathy Jordan	6	6
	6	Sylvie Rual	0	4

• 1978 US Open – Women's draws and results at the International Tennis Federation