2018 Monte-Carlo Masters – Doubles

Rohan Bopanna and Pablo Cuevas were the defending champions, but chose not to participate together. Bopanna played alongside Édouard Roger-Vasselin, but lost in the semifinals to Oliver Marach and Mate Pavić. Cuevas teamed up with Marcel Granollers, but lost in the quarterfinals to Bob and Mike Bryan.

The Bryan brothers went on to win the title, beating Marach and Pavić in the final, 7–6(7–5), 6–3.

Seeds
All seeds received a bye into the second round. • # 🇵🇱 Łukasz Kubot / 🇧🇷 Marcelo Melo (second round)

• # 🇫🇮 Henri Kontinen / 🇦🇺 John Peers (second round)

• # 🇦🇹 Oliver Marach / Mate Pavić (final)

• # 🇺🇸 Bob Bryan / 🇺🇸 Mike Bryan (champions)

• # 🇫🇷 Pierre-Hugues Herbert / 🇫🇷 Nicolas Mahut (second round)

• # Jean-Julien Rojer / 🇷🇴 Horia Tecău (withdrew)

• # 🇬🇧 Jamie Murray / 🇧🇷 Bruno Soares (second round)

• # Ivan Dodig / 🇺🇸 Rajeev Ram (second round)