The 1989 Virginia Slims of Oklahoma was a women's tennis tournament played on indoor hard courts at The Greens Country Club in Oklahoma City, Oklahoma in the United States and was part of Tier V of the 1989 WTA Tour. The tournament ran from February 27 through March 5, 1989.
Manon Bollegraf defeated Leila Meskhi 6–4, 6–4
- It was Bollegraf's 2nd title of the year and the 3rd of her career.
Lori McNeil / Betsy Nagelsen defeated Elise Burgin / Elizabeth Smylie by Walkover
- It was McNeil's 1st title of the year and the 19th of her career. It was Nagelsen's 2nd title of the year and the 20th of her career.