1998 ATP German Open – Singles
Andriy Medvedev was the defending champion, but lost in the first round to Álbert Costa. Costa went on to win the title, defeating Àlex Corretja in the final, 6–2, 6–0, 1–0 (ret). Seeds. A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated. The top eight seeds received a bye into the second round.