The 1989 Toray Pan Pacific Open was a women's tennis tournament played on indoor carpet courts at the Tokyo Metropolitan Gymnasium in Tokyo in Japan and was part of the Category 4 tier of the 1989 WTA Tour.

The tournament was held from January 31 through February 5, 1989.

First-seeded Martina Navratilova won the singles title.

[1] Martina Navratilova defeated Lori McNeil 6–7(3–7), 6–3, 7–6(7–5) Katrina Adams / Zina Garrison defeated Mary Joe Fernández / Claudia Kohde-Kilsch 6–3, 3–6, 7–6(7–5)