1999 IGA SuperThrift Classic
| 1999 IGA SuperThrift Classic | |
|---|---|
| Date | February 22 – February 28 |
| Edition | 14th |
| Category | Tier III |
| Surface | Hard / Indoor |
| Location | Oklahoma City, OK, USA |
| Champions | |
| Singles | |
 Venus Williams | |
| Doubles | |
Lisa Raymond /  Rennae Stubbs | |
The 1999 IGA SuperThrift Classic was a women's tennis tournament played on indoor hard courts at The Greens Country Club in Oklahoma City, Oklahoma in the United States that was part of Tier III of the 1999 WTA Tour. It was the 14th edition of the tournament and was held from February 22 through February 28, 1999. Venus Williams won the singles title.
Champions
Singles
Venus Williams defeated 
Amanda Coetzer, 6–4, 6–0
- It was Williams' 2nd title of the year and the 9th of her career.
Doubles
Lisa Raymond / Rennae Stubbs defeated Amanda Coetzer / Jessica Steck, 6–3, 6–4
Entrants
Seeds
| Country | Player | Rank | Seed |
|---|---|---|---|
| USA |
Venus Williams | 5 | 1 |
 RUS |
Anna Kournikova | 13 | 2 |
| RSA |
Amanda Coetzer | 10 | 3 |
| USA |
Lisa Raymond | 27 | 4 |
| USA |
Chanda Rubin | 28 | 5 |
| USA |
Amy Frazier | 32 | 6 |
| RSA |
Mariaan de Swardt | 33 | 7 |
| USA |
Tara Snyder | 36 | 8 |
Other entrants
The following players received wildcards into the singles main draw:
The following players received wildcards into the doubles main draw:
The following players received entry from the singles qualifying draw:
The following players received entry from the doubles qualifying draw: