The 1989 Frankfurt Cup, was a men's tennis tournament played on indoor carpet courts and in Frankfurt, West Germany that was part of the 1989 Grand Prix circuit.

It was the third and last edition of the tournament was held from 23 October until 29 October 1989.

Third-seeded Kevin Curren won the singles title.

[3][4] Kevin Curren defeated Petr Korda, 6–2, 7–5 Pieter Aldrich / Danie Visser defeated Kevin Curren / Eric Jelen, 7–6, 6–7, 6–3