1989 Great American Bank Classic

The 1989 Great American Bank Classic was a women's tennis tournament played on outdoor hard courts at the San Diego Tennis & Racquet Club in San Diego, California in the United States that was part of the Category 3 tier of the 1989 WTA Tour. The tournament was held from July 31 through August 6, 1989. First-seeded Steffi Graf won the singles title.

The tournament's purse doubled to $200,000 in 1989, when the sponsor changed to San Diego-based Great American Bank from Virginia Slims, a cigarette brand owned by Philip Morris.

Singles
Steffi Graf defeated 🇺🇸 Zina Garrison 6–4, 7–5
 * It was Graf's 9th singles title of the year and the 39th of her career.

Doubles
🇺🇸 Elise Burgin / Rosalyn Fairbank defeated 🇺🇸 Gretchen Magers / 🇺🇸 Robin White 4–6, 6–3, 6–3
 * It was Burgin's only title of the year and the 10th of her career. It was Fairbank's only title of the year and the 1st of her career.