2018 Western & Southern Open – Men's doubles

Pierre-Hugues Herbert and Nicolas Mahut were the defending champions,[1] but Herbert chose not to participate this year.

Mahut played alongside Édouard Roger-Vasselin, but they lost in the second round to Philipp Kohlschreiber and Fernando Verdasco.

Jamie Murray and Bruno Soares won the title, defeating Juan Sebastián Cabal and Robert Farah in the final, 4–6, 6–3, [10–6].

All seeds received a bye into the second round.