| 1999 Monte Carlo Open | |
|---|---|
| Date | 19–25 April |
| Edition | 93rd |
| Category | ATP Super 9 |
| Draw | 56S / 28D |
| Prize money | $2,220,000 |
| Surface | Clay / outdoor |
| Location | Roquebrune-Cap-Martin, France |
| Venue | Monte Carlo Country Club |
| Champions | |
| Singles | |
 Gustavo Kuerten[1] | |
| Doubles | |
 Olivier Delaître /  Tim Henman[2] | |
The 1999 Monte Carlo Open was a men's tennis tournament played on outdoor clay courts. It was the 93rd edition of the Monte Carlo Open, and was part of the ATP Super 9 of the 1999 ATP Tour. It took place at the Monte Carlo Country Club in Roquebrune-Cap-Martin, France, near Monte Carlo, Monaco, from 19 April through 25 April 1999.
Thirteenth-seeded Gustavo Kuerten won the singles title.
- ^ "1999 Monte Carlo – Singles draw". Association of Tennis Professionals (ATP).
- ^ "1999 Monte Carlo – Doubles draw". Association of Tennis Professionals (ATP).