1988 Porsche Tennis Grand Prix – Singles

First-seeded Martina Navratilova was the defending champion and won in the final 6–2, 6–3 against Chris Evert.

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


 * 1) 🇺🇸 Martina Navratilova (champion)
 * 2) 🇺🇸 Chris Evert (final)
 * 3) 🇦🇷 Gabriela Sabatini (first round)
 * 4)  Claudia Kohde-Kilsch (first round)
 * 5) 🇺🇸 Mary Joe Fernández (second round)
 * 6)  Sylvia Hanika (quarterfinals)
 * 7) 🇪🇸 Arantxa Sánchez (first round)
 * 8) 🇮🇹 Raffaella Reggi (semifinals)