Doubles
1990 Puerto Rico Open
Final
Champions	Elena Brioukhovets Natalia Medvedeva
Runners-up	Amy Frazier Julie Richardson
Score	6–4, 6–2
Details
Draw	16 (1WC)
Seeds	4
Events
Singles Doubles
← 1989 · Puerto Rico Open · 1991 →

There were no defending champions in this edition, as the last year final was cancelled due to rain. Patty Fendick and Jill Hetherington, winners of the 1988 edition, did not compete this year.

Elena Brioukhovets and Natalia Medvedeva won the title by defeating Amy Frazier and Julie Richardson 6–4, 6–2 in the final.^[1]

	First round							Quarterfinals							Semifinals							Final
	1	G Fernández Z Garrison	3	65
		C Benjamin Ca MacGregor	6	77					C Benjamin Ca MacGregor	3	7	2
	WC	Maribel Amadeo Camille Baldrich	1	2					A Frazier J Richardson	6	5	6
		A Frazier J Richardson	6	6												A Frazier J Richardson	4	6	6
	4	K Adams P Barg-Mager	6	6											4	K Adams P Barg-Mager	6	3	4
		S Albinus L Corsato	3	4				4	K Adams P Barg-Mager	6	6
		L Ferrando M Strandlund	6	6					L Ferrando M Strandlund	3	2
		S Smith H ter Riet	4	2																			A Frazier J Richardson	4	2
		H Kelesi R Reggi	6	6																			E Brioukhovets N Medvedeva	6	6
		B Fulco F Labat	3	4					H Kelesi R Reggi	2	4
		E Brioukhovets N Medvedeva	6	77					E Brioukhovets N Medvedeva	6	6
	3	N Provis E Reinach	3	64												E Brioukhovets N Medvedeva	7	6
		C Cunningham F Haumüller	4	1												A Grossman R Stubbs	5	3
		A Grossman R Stubbs	6	6					A Grossman R Stubbs	w/o
		L Barnard W White-Prausa	5	4				2	M McGrath L McNeil
	2	M McGrath L McNeil	7	6

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