# 2018 German Open – Doubles

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].

## Seeds

* Oliver Marach / Mate Pavić (final)
* Ivan Dodig / Jean-Julien Rojer (quarterfinals)
* Nikola Mektić / Alexander Peya (first round)
* Pablo Cuevas / Marc López (quarterfinals)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Draw

| First round | First round | First round | First round | First round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 1 | O Marach M Pavić | 6 | 6 | | | | | | | | | | | | | | | | |
| | L Mayer D Schwartzman | 3 | 4 | | 1 | O Marach M Pavić | 4 | 7$^7$ | [10] | | | | | | | | | | |
| | B Paire É Roger-Vasselin | 7 | 6 | | | B Paire É Roger-Vasselin | 6 | 6$^3$ | [7] | | | | | | | | | | |
| | D Inglot F Škugor | 5 | 2 | | | | | | | 1 | O Marach M Pavić | 2 | 6 | [10] | | | | | |
| 3 | N Mektić A Peya | 4 | 5 | | | | | | | | M Daniell W Koolhof | 6 | 4 | [7] | | | | | |
| | D Marrero A-u-H Qureshi | 6 | 7 | | | D Marrero A-u-H Qureshi | 1 | 2 | | | | | | | | | | | |
| | M Mirnyi P Oswald | 7$^7$ | 4 | [5] | | M Daniell W Koolhof | 6 | 6 | | | | | | | | | | | |
| | M Daniell W Koolhof | 6$^4$ | 6 | [10] | | | | | | | | | | | 1 | O Marach M Pavić | 1 | 6 | [6] |
| Q | M Kližan J Kovalík | 2 | 7$^7$ | [4] | | | | | | | | | | | | J Peralta H Zeballos | 6 | 4 | [10] |
| | J Peralta H Zeballos | 6 | 6$^5$ | [10] | | J Peralta H Zeballos | 6$^{10}$ | 6 | [10] | | | | | | | | | | |
| WC | P Petzschner T Pütz | 4 | 1 | | 4 | P Cuevas M López | 7$^{12}$ | 4 | [8] | | | | | | | | | | |
| 4 | P Cuevas M López | 6 | 6 | | | | | | | | J Peralta H Zeballos | 4 | 7 | [10] | | | | | |
| WC | J Melzer D Thiem | 6$^5$ | 6$^4$ | | | | | | | | B McLachlan J-L Struff | 6 | 5 | [7] | | | | | |
| | B McLachlan J-L Struff | 7$^7$ | 7$^7$ | | | B McLachlan J-L Struff | 6$^{12}$ | 6 | [10] | | | | | | | | | | |
| | D Džumhur H Podlipnik-Castillo | 6 | 3 | [4] | 2 | I Dodig J-J Rojer | 7$^{14}$ | 1 | [8] | | | | | | | | | | |
| 2 | I Dodig J-J Rojer | 4 | 6 | [10] | | | | | | | | | | | | | | | |

## Qualifying
### Seeds

* Nicolás Jarry / Maximilian Marterer (qualifying competition)
* Andre Begemann / Florin Mergea (first round)

### Qualifiers

* Martin Kližan / Jozef Kovalík

### Qualifying draw

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Nicolás Jarry Maximilian Marterer | 6 | 6 | | | | | |
| Alt | Tobias Kamke George von Massow | 3 | 3 | | | | | |
| Alt | Tobias Kamke George von Massow | 3 | 3 | | 1 | Nicolás Jarry Maximilian Marterer | 4 | 0 |
| | | | | | | Martin Kližan Jozef Kovalík | 6 | 6 |
| | Martin Kližan Jozef Kovalík | 7$^7$ | 6$^5$ | [11] | | Martin Kližan Jozef Kovalík | 6 | 6 |
| 2/WC | Andre Begemann Florin Mergea | 6$^4$ | 7$^7$ | [9] | | | | |