See main article: article and 2018 Open de Rennes.
Evgeny Donskoy and Mikhail Elgin were the defending champions but chose not to defend their title.
Sander Gillé and Joran Vliegen won the title after defeating Sander Arends and Antonio Šančić 6–3, 6–7(1–7), [10–7] in the final.