Singles
1990 Toray Pan Pacific Open
Final
Champion	Steffi Graf
Runner-up	Arantxa Sánchez Vicario
Score	6–1, 6–2
Details
Draw	28 (3Q/2LL)
Seeds	8
Events
Singles Doubles
← 1989 · Pan Pacific Open · 1991 →

Martina Navratilova was the defending champion, but did not compete this year.

Steffi Graf won the title by defeating Arantxa Sánchez Vicario 6–1, 6–2 in the final.^[1]

The first four seeds received a bye into the second round.

	Semifinals							Final
	1	Steffi Graf	6	6
	3	Manuela Maleeva-Fragnière	4	4
								1	Steffi Graf	6	6
								2	Arantxa Sánchez Vicario	1	2
		Akiko Kijimuta	4	2
	2	Arantxa Sánchez Vicario	6	6

	First round							Second round							Quarterfinals							Semifinals
								1	S Graf	6	6
		C Benjamin	3	3					N Jagerman	0	1
		N Jagerman	6	6											1	S Graf	6	6
		P Louie Harper	2	6	6										5	L Savchenko	0	3
	Q	S Collins	6	4	2				P Louie Harper	6	6	6
		C Porwik	4	4				5	L Savchenko	4	7	7
	5	L Savchenko	6	6																		1	S Graf	6	6
																						3	M Maleeva-Fragnière	4	4
								3	M Maleeva-Fragnière	6	6
	Q	A Nishiya	5	1					T Phelps	2	1
		T Phelps	7	6											3	M Maleeva-Fragnière	6	6
		B Schultz	6	7												B Schultz	2	0
		R McQuillan	3	5					B Schultz	6	6
		E Inoue	6	7					E Inoue	1	2
	8	A Minter	2	6

	First round							Second round							Quarterfinals							Semifinals
	7	L McNeil	3	6	3
		A Kijimuta	6	3	6				A Kijimuta	6	3	6
		C MacGregor	6	6					C MacGregor	1	6	1
	LL	H Ludloff	4	4												A Kijimuta	7	2	6
		K Adams	2	6	3										LL	N Miyagi	6	6	2
	LL	N Miyagi	6	3	6			LL	N Miyagi	7	6
									R Hiraki	6	2
																							A Kijimuta	4	2
	6	G Fernández	6	6																		2	A Sánchez Vicario	6	6
		K Date	1	4				6	G Fernández	6	6
		K Okamoto	3	3				Q	M Kidowaki	3	3
	Q	M Kidowaki	6	6											6	G Fernández	6	1	2
		JA Faull	1	6											2	A Sánchez Vicario	1	6	6
		E Smylie	6	2	r				JA Faull	1	0
								2	A Sánchez Vicario	6	6

• Official results archive (ITF)
• Official results archive (WTA)