| Barbara Paulus|
| Conchita Martínez|
Barbara Paulus was the defending champion, of this tennis competition, but lost in the second round to Andrea Glass.
Conchita Martínez won in the final 6–0, 6–3 against Silvia Farina.
1998 Warsaw Cup by Heros – Singles Wikipedia
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated. The top two seeds received a bye to the second round.