1989 Stella Artois Indoor – Singles
Introduction Yannick Noah was the defending champion but lost in the second round to Slobodan Živojinović.Boris Becker won in the final 6–1, 6–2 against Alexander Volkov.
Seeds A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.#  '''Boris Becker (champion)'''#  Miloslav Mečíř ''(first round)''#  John McEnroe ''(semifinals)''#  Jakob Hlasek ''(second round)''#  Henri Leconte ''(first round)''#  Yannick Noah ''(second round)''#  Jonas Svensson ''(second round)''# n/a
Draw
External links *  1989 Stella Artois Indoor Draw