1989 United Jersey Bank Classic

The 1989 United Jersey Bank Classic was a women's tennis tournament played on outdoor hard courts in Mahwah, New Jersey in the United States that was part of the Category 3 tier of the 1989 WTA Tour. It was the 12th and last edition of the tournament and was held from August 14 through August 20, 1989. First-seeded Steffi Graf won the singles title and earned $40,000 first-prize money.

Singles
Steffi Graf defeated 🇭🇺 Andrea Temesvári 7–5, 6–2
 * It was Graf's 10th singles title of the year and the 40th of her career.

Doubles
Steffi Graf / 🇺🇸 Pam Shriver defeated 🇺🇸 Louise Allen / 🇵🇪 Laura Gildemeister 6–2, 6–4
 * It was Graf's 11th title of the year and the 49th of her career. It was Shriver's 6th title of the year and the 122nd of her career.