1990 ABN World Tennis Tournament – Singles

Jakob Hlasek was the defending champion, but lost in the semifinals to seventh seed Jonas Svensson.Brad Gilbert won the title, defeating Jonas Svensson 6–1, 6–3, in the final.

Seeds

Brad Gilbert (champion) Alberto Mancini (first round) Yannick Noah (first round) Carl-Uwe Steeb (second round) Magnus Gustafsson (quarterfinals) Jakob Hlasek (semifinals) Jonas Svensson (final) Amos Mansdorf (quarterfinals)