The 2025 Monte-Carlo Masters (also known as the Rolex Monte-Carlo Masters for sponsorship reasons) was a tennis tournament for male professionals played on outdoor clay courts. It was the 118th edition of the annual Monte Carlo Masters tournament, sponsored by Rolex for the 16th time. It was held at the Monte Carlo Country Club in Roquebrune-Cap-Martin, France (though billed as Monte Carlo, Monaco). The event was an ATP Masters 1000 tournament on the 2025 ATP Tour.

Because the Monte Carlo Masters is a non-mandatory Masters 1000 event, special rules regarding points distribution are in place. The Monte Carlo Masters counts as one of a player's 500 level tournaments, while distributing Masters 1000 points.

¹ Rankings are as of 31 March 2024

The following players received wildcards into the main draw:

The following players received entry via the qualifying draw:

¹ Rankings are as of 31 March 2025.

The following pairs received wildcards into the doubles main draw:

The following pair received entry as alternates: