The 1998 Páginas Amarillas Open was a women's tennis tournament played on outdoor clay courts in Madrid in Spain that was part of Tier III of the 1998 WTA Tour. It was the third edition of the tournament and was held from May 18 through May 23, 1998.
| 1998 Páginas Amarillas Open | |
|---|---|
| Date | May 18 – May 23 |
| Edition | 3rd |
| Category | Tier III |
| Surface | Clay / Outdoor |
| Location | Madrid, Spain |
| Champions | |
| Singles | |
 Patty Schnyder | |
| Doubles | |
 Florencia Labat /  Dominique Van Roost | |
Winners edit
Women's singles edit
Patty Schnyder defeated Dominique Van Roost 3–6, 6–4, 6–0
- It was Schnyder's 4th title of the year and the 4th of her career.
Women's doubles edit
Florencia Labat / Dominique Van Roost defeated 
Rachel McQuillan / Nicole Pratt 6–3, 6–1
- It was Labat's only title of the year and the 6th of her career. It was Van Roost's 2nd title of the year and the 7th of her career.