2018 German Open – Doubles
| Doubles | |
|---|---|
| 2018 German Open | |
| Champions | Julio Peralta Horacio Zeballos |
| Runners-up | Oliver Marach Mate Pavić |
| Score | 6–1, 4–6, [10–6] |
Ivan Dodig and Mate Pavić were the defending champions, but chose not to participate together this year. Dodig played alongside Jean-Julien Rojer, but lost in the quarterfinals to Ben McLachlan and Jan-Lennard Struff. Pavić teamed up with Oliver Marach, but lost in the final to Julio Peralta and Horacio Zeballos, 1–6, 6–4, [6–10].