2018 Koblenz Open – Doubles

Hans Podlipnik-Castillo and Andrei Vasilevski were the defending champions but chose not to defend their title.

Romain Arneodo and Tristan-Samuel Weissborn won the title after defeating Sander Arends and Antonio Šančić 6–7(4–7), 7–5, [10–6] in the final.

Seeds
• # Sander Arends / Antonio Šančić (final)

• # Romain Arneodo / 🇦🇹 Tristan-Samuel Weissborn (champions)

• # 🇧🇪 Sander Gillé / 🇧🇪 Joran Vliegen (semifinals)

• # 🇮🇳 Sriram Balaji / 🇮🇳 Vishnu Vardhan (first round)