| 2018 Monte-Carlo Masters | |
|---|---|
| Date | April 15 – 22 |
| Edition | 112th |
| Category | Masters 1000 |
| Draw | 56S / 24D |
| Prize money | €4,273,775 |
| Surface | Clay |
| Location | Roquebrune-Cap-Martin, France (billed as Monte Carlo, Monaco) |
| Venue | Monte Carlo Country Club |
| Champions | |
| Singles | |
 Rafael Nadal | |
| Doubles | |
 Bob Bryan / Mike Bryan | |
The 2018 Monte-Carlo Masters (also known as the Rolex Monte-Carlo Masters for sponsorship reasons) was a tennis tournament for male professional players that was played on outdoor clay courts. It was the 112th edition of the annual Monte Carlo Masters tournament, sponsored by Rolex for the tenth time. It took place at the Monte Carlo Country Club in Roquebrune-Cap-Martin, France (though billed as Monte Carlo, Monaco).