1989 Spanish Open – Singles

Niege Dias was the defending champion but lost in the second round to Tine Scheuer-Larsen.

Arantxa Sánchez won in the final 6–2, 5–7, 6–1 against Helen Kelesi.

Seeds
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.


 * 1) 🇨🇦 Helen Kelesi (final)
 * 2) 🇪🇸 Arantxa Sánchez (champion)
 * 3)  Jana Novotná (semifinals)
 * 4)  Sylvia Hanika (quarterfinals)
 * 5) 🇮🇹 Raffaella Reggi (quarterfinals)
 * 6) 🇦🇹 Judith Wiesner (first round)
 * 7) 🇦🇹 Barbara Paulus (second round)
 * 8) 🇧🇷 Niege Dias (second round)