2018 Sydney International – Men's doubles

Wesley Koolhof and Matwé Middelkoop were the defending champions, but chose to compete with different partners in Auckland instead.

Łukasz Kubot and Marcelo Melo won the title, defeating Jan-Lennard Struff and Viktor Troicki in the final, 6–3, 6–4.

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

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

• # 🇪🇸 Feliciano López / 🇪🇸 Marc López (first round)

• # 🇮🇳 Rohan Bopanna / 🇫🇷 Édouard Roger-Vasselin (semifinals)