The 1989 Virginia Slims of Houston was a women's tennis tournament played on outdoor clay courts at the Westside Tennis Club in Houston, Texas in the United States that was part of the Category 4 tier of the 1989 WTA Tour. The tournament was held from April 24 through April 30, 1989. Unseeded Monica Seles won the singles title.
| 1989 Virginia Slims of Houston | |
|---|---|
| Date | April 24–30 |
| Edition | 19th |
| Category | Category 4 |
| Draw | 32S / 16D |
| Prize money | $250,000 |
| Surface | Clay / outdoor |
| Location | Houston, Texas, U.S. |
| Venue | Westside Tennis Club |
| Champions | |
| Singles | |
 Monica Seles | |
| Doubles | |
 Katrina Adams / Zina Garrison | |
Finals edit
Singles edit
Monica Seles defeated Chris Evert 3–6, 6–1, 6–4
- It was Seles' only title of the year and the 1st of her career.
Doubles edit
Katrina Adams / Zina Garrison defeated Gigi Fernández / Lori McNeil 6–3, 6–4
- It was Adams' 3rd title of the year and the 7th of her career. It was Garrison's 2nd title of the year and the 19th of her career.