Singles
1989 Virginia Slims of California
1988 Champion	Martina Navratilova
Final
Champion	Zina Garrison
Runner-up	Larisa Savchenko
Score	6–1, 6–1
Events
Singles Doubles
← 1988 · Virginia Slims of California · 1990 →

Martina Navratilova was the defending champion of the singles event but lost in the semifinals of the 1989 Virginia Slims of California tennis tournament to Larisa Savchenko.

Zina Garrison won in the final 6–1, 6–2 against Savchenko.

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.

	First round							Second round							Quarterfinals							Semifinals							Final
	1	M Navratilova	6	6
		K Rinaldi	1	2				1	M Navratilova	6	6
		R White	6	3	6				I Demongeot	3	1
		I Demongeot	3	6	7										1	M Navratilova	6	6
		M Javer	1	6	7											J Byrne	1	4
		D van Rensburg	6	4	6				M Javer	3	4
		J Byrne	6	7					J Byrne	6	6
	8	R Fairbank	4	6																		1	M Navratilova	1	4
	4	L Savchenko	7	6																		4	L Savchenko	6	6
		P Louie-Harper	5	2				4	L Savchenko	6	7
		H Ludloff	4	7	1				J Hetherington	3	5
		J Hetherington	6	6	6										4	L Savchenko	6	6
		M L Daniels	4	6	6										5	P Fendick	1	1
		A Ivan	6	1	3				M L Daniels	2	3
		A Henricksson	2	3				5	P Fendick	6	6
	5	P Fendick	6	6																									4	Larisa Savchenko	1	1
	6	E Reinach	4	7	3																								3	Zina Garrison	6	6
		G Magers	6	6	6				G Magers	3	4
		G Fernández	6	6					G Fernández	6	6
		K Steinmetz	1	3												G Fernández	6	4
		A Holíková	6	2	6										3	Z Garrison	7	6
		L Green	4	6	4				A Holíková	0	1
		E Burgin	1	1				3	Z Garrison	6	6
	3	Z Garrison	6	6																		3	Z Garrison	7	6
	7	N Tauziat	6	6																		2	N Zvereva	5	4
		E Hakami	2	2				7	N Tauziat	6	6
		E Pfaff	6	6					E Pfaff	2	4
		A Grossman	3	0											7	N Tauziat	2	6
		B Herr	2	6	5										2	N Zvereva	6	7
		K Adams	6	2	7				K Adams	3	2
		C Benjamin	1	4				2	N Zvereva	6	6
	2	N Zvereva	6	6

• 1989 Virginia Slims of California Draw