The 1991 Arizona Classic was a women's tennis tournament played on outdoor hard courts at the Scottsdale Princess Resort in Scottsdale, Arizona in the United States and was part of Tier IV of the 1991 WTA Tour.

It was the sixth, and last, edition of the tournament and was held from October 28 through November 3, 1991.

Third-seeded Sabine Appelmans won the singles title and earned $27,000 first-prize money.

[1][2] Sabine Appelmans defeated Chanda Rubin 7–5, 6–1 Peanut Louie Harper / Cammy MacGregor defeated Sandy Collins / Elna Reinach 7–5, 3–6, 6–3