Łukasz Kubot and Marcelo Melo were the defending champions and successfully defended their title, defeating Alexander and Mischa Zverev in the final, 7–6(7–1), 6–4 in a repeat of the previous year's final.
| Doubles | |
|---|---|
| 2018 Gerry Weber Open | |
| Champions |  Łukasz Kubot Marcelo Melo |
| Runners-up |  Alexander Zverev Mischa Zverev |
| Score | 7–6(7–1), 6–4 |
| Draw | 16 |
| Seeds | 4 |
Seeds edit
Łukasz Kubot / 
Marcelo Melo (champions)
Nikola Mektić / 
Alexander Peya (semifinals)
Aisam-ul-Haq Qureshi / 
Jean-Julien Rojer (first round)- Ivan Dodig /
Rajeev Ram (semifinals)
Draw edit
Key edit
- 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 edit
| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | Ł Kubot M Melo
| 6 | 6 | ||||||||||||||||||||||||
| Q |  J Erlich  N Monroe
| 3 | 4 | 1 | Ł Kubot M Melo
| 62 | 6 | [10] | |||||||||||||||||||
 M Mirnyi  P Oswald
| 7 | 77 | M Mirnyi P Oswald
| 77 | 3 | [4] | |||||||||||||||||||||
M Matkowski  M Middelkoop
| 5 | 64 | 1 | Ł Kubot M Melo
| 65 | 6 | [12] | ||||||||||||||||||||
| 4 |  I Dodig R Ram
| 6 | 6 | 4 | I Dodig R Ram
| 77 | 3 | [10] | |||||||||||||||||||
 K Khachanov  L Pouille
| 3 | 0 | 4 | I Dodig R Ram
| 7 | 7 | |||||||||||||||||||||
 M Granollers R Haase
| 6 | 77 | M Granollers R Haase
| 5 | 5 | ||||||||||||||||||||||
 B McLachlan K Nishikori
| 3 | 63 | 1 | Ł Kubot M Melo
| 77 | 6 | |||||||||||||||||||||
 R Klaasen  M Venus
| 4 | 64 | A Zverev M Zverev
| 61 | 4 | ||||||||||||||||||||||
| WC | T Pütz J-L Struff
| 6 | 77 | WC | T Pütz J-L Struff
| 3 | 6 | [3] | |||||||||||||||||||
| A Zverev M Zverev
| 67 | 77 | [10] | A Zverev M Zverev
| 6 | 4 | [10] | ||||||||||||||||||||
| 3 |  A-u-H Qureshi J-J Rojer
| 79 | 62 | [8] | A Zverev M Zverev
| 6 | 3 | [10] | |||||||||||||||||||
| S Johnson D Thiem
| 62 | 77 | [6] | 2 | N Mektić A Peya
| 3 | 6 | [5] | |||||||||||||||||||
 D Inglot F Škugor
| 77 | 65 | [10] | D Inglot F Škugor
| 3 | 3 | |||||||||||||||||||||
| WC | P Kohlschreiber P Petzschner
| 2 | 4 | 2 | N Mektić A Peya
| 6 | 6 | ||||||||||||||||||||
| 2 | N Mektić A Peya
| 6 | 6 | ||||||||||||||||||||||||
Qualifying edit
Seeds edit
Divij Sharan / 
Artem Sitak (first round)
Jonathan Erlich / Nicholas Monroe (qualified)
Qualifiers edit
Qualifying draw edit
| First round | Qualifying competition | ||||||||||||
| 1 |  Divij Sharan Artem Sitak
| 3 | 6 | [2] | |||||||||
| WC | Andre Begemann Dustin Brown
| 6 | 3 | [10] | |||||||||
| WC | Andre Begemann Dustin Brown
| 6 | 3 | [12] | |||||||||
| 2 | Jonathan Erlich Nicholas Monroe
| 4 | 6 | [14] | |||||||||
Benoît Paire  Andreas Seppi
| 3 | 4 | |||||||||||
| 2 | Jonathan Erlich Nicholas Monroe
| 6 | 6 | ||||||||||