1998 Toshiba Classic
| 1998 Toshiba Classic | |
|---|---|
| Date | August 3 – August 9 |
| Edition | 20th |
| Champions | |
| Singles | |
 Lindsay Davenport | |
| Doubles | |
Lindsay Davenport /  Natasha Zvereva | |
The 1998 Toshiba Classic was a tennis tournament played on outdoor hard courts at the La Costa Resort and Spa in San Diego, California in the United States that was part of Tier II of the 1998 WTA Tour. The tournament was held from August 3 through August 9, 1998.
Winners
Women's Singles
Lindsay Davenport defeated 
Mary Pierce 6–3, 6–1
- It was Davenport's 6th title of the year and the 37th of her career.
Women's Doubles
Lindsay Davenport / Natasha Zvereva defeated Alexandra Fusai / Nathalie Tauziat 6–2, 6–1
- It was Davenport's 7th title of the year and the 38th of her career. It was Zvereva's 4th title of the year and the 77th of her career.