1999 Monte Carlo Open – Singles

Singles
1999 Monte Carlo Open
Champion Gustavo Kuerten
Runner-up Marcelo Ríos
Score6–4, 2–1, retired
Draw56 (7Q / 5WC)
Seeds16

Gustavo Kuerten won the singles tennis title at the 1999 Monte Carlo Open when Marcelo Ríos retired from the final with the scoreline at 6–4, 2–1.

Carlos Moyá was the defending champion, but lost in the quarterfinals to Jérôme Golmard.