1990 Monte Carlo Open – Singles

Singles
1990 Monte Carlo Open
Champion Andrei Chesnokov
Runner-up Thomas Muster
Score7–5, 6–3, 6–3
Draw56 (6Q / 4WC)
Seeds16

Andrei Chesnokov defeated Thomas Muster in the final, 7–5, 6–3, 6–3 to win the singles tennis title at the 1990 Monte Carlo Open.

Alberto Mancini was the defending champion, but lost in the second round to Henri Leconte.