1990 Stella Artois Indoor – Singles

Boris Becker was the defending champion, but did not take part that year. Ivan Lendl won the title, defeating Tim Mayotte 6–3, 6–2, in the final.

Seeds
• # Ivan Lendl (champion)

• # 🇺🇸 John McEnroe (semifinals)

• # 🇺🇸 Aaron Krickstein (second round)

• # 🇫🇷 Yannick Noah (first round)

• # 🇺🇸 Tim Mayotte (final)

• # 🇺🇸 Jimmy Connors (first round)

• # (withdrew)

• # 🇺🇸 Jim Courier (quarterfinals)