1998 Pilot Pen International – Women's singles

Lindsay Davenport was the defending champion but lost in the semifinals to Steffi Graf.

Graf won in the final 6–4, 6–1 against Jana Novotná.

Seeds
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated. The top four seeds received a bye to the second round.


 * 1) 🇺🇸 Lindsay Davenport (semifinals)
 * 2) 🇨🇿 Jana Novotná (final)
 * 3) 🇪🇸 Arantxa Sánchez-Vicario (second round)
 * 4) 🇩🇪 Steffi Graf (champion)
 * 5) 🇫🇷 Nathalie Tauziat (first round)
 * 6)  Patty Schnyder (second round)
 * 7)  Amanda Coetzer (quarterfinals)
 * 8) 🇧🇪 Dominique Van Roost (first round)