1990 Puerto Rico Open – Doubles

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.

Seeds
• # 🇺🇸 Gigi Fernández / 🇺🇸 Zina Garrison (first round)

• # 🇺🇸 Meredith McGrath / 🇺🇸 Lori McNeil (quarterfinals, withdrew)

• # 🇦🇺 Nicole Provis / Elna Reinach (first round)

• # 🇺🇸 Katrina Adams / 🇺🇸 Penny Barg-Mager (semifinals)