1999 Monte Carlo Open – Singles
| Singles | |
|---|---|
| 1999 Monte Carlo Open | |
| Champion | Gustavo Kuerten |
| Runner-up | Marcelo Ríos |
| Score | 6–4, 2–1, retired |
| Draw | 56 (7Q / 5WC) |
| Seeds | 16 |
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.