2018 Miami Open – Men's doubles

Łukasz Kubot and Marcelo Melo were the defending champions, but lost in the first round to Steve Johnson and Sam Querrey.

Bob and Mike Bryan won the title, defeating Karen Khachanov and Andrey Rublev in the final, 4–6, 7–6(7–5), [10–4].

Seeds
• # 🇵🇱 Łukasz Kubot / 🇧🇷 Marcelo Melo (first round)

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

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

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

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

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

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

• # 🇨🇴 Juan Sebastián Cabal / 🇨🇴 Robert Farah (quarterfinals)