The 1989 Virginia Slims of Arizona was a women's tennis tournament played on outdoor hard courts in Phoenix, Arizona in the United States and was part of the Category 2 tier of the 1989 WTA Tour.

It was the fourth edition of the tournament and was held from September 12 through September 18, 1989.

First-seeded Conchita Martínez won the singles title and earned $17,000 first-prize money.

[1][2][3] Conchita Martínez defeated Elise Burgin 3–6, 6–4, 6–2 Penny Barg / Peanut Louie Harper defeated Elise Burgin / Rosalyn Fairbank 7–6(16–14), 7–6(7–3)