| Doubles | ||||
|---|---|---|---|---|
| 2018 Bauer Watertechnology Cup | ||||
| Final | ||||
| Champions |  Kevin Krawietz Andreas Mies | |||
| Runners-up |  Hugo Nys Jonny O'Mara | |||
| Score | 6–1, 6–4 | |||
| Events | ||||
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Sander Arends and Roman Jebavý were the defending champions but only Arends chose to defend his title, partnering Romain Arneodo. Arends lost in the semifinals to Hugo Nys and Jonny O'Mara.
Kevin Krawietz and Andreas Mies won the title after defeating Nys and O'Mara 6–1, 6–4 in the final.
Seeds
Marcus Daniell / 
Marcelo Demoliner (semifinals)- Hugo Nys / Jonny O'Mara (final)
Sander Arends / 
Romain Arneodo (semifinals)- Kevin Krawietz / Andreas Mies (champions)
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
| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | M Daniell M Demoliner
| 6 | 7 | ||||||||||||||||||||||||
 A Vasilevski T-S Weissborn
| 7 | 6 | 1 | M Daniell M Demoliner
| 7 | 6 | |||||||||||||||||||||
| WC | D Masur C Seraphim
| 6 | 7 | WC | D Masur C Seraphim
| 6 | 7 | ||||||||||||||||||||
 S Gillé J Vliegen
| 3 | 5 | 1 | M Daniell M Demoliner
| 6 | 6 | |||||||||||||||||||||
| 4 | K Krawietz A Mies
| 6 | 6 | 4 | K Krawietz A Mies
| 7 | 3 | ||||||||||||||||||||
 A Martin H Podlipnik Castillo
| 7 | 2 | 4 | K Krawietz A Mies
| 7 | 6 | |||||||||||||||||||||
 R Junaid D Pel
| 6 | 3 | WC | J Härteis K Lemstra
| 5 | 4 | |||||||||||||||||||||
| WC | J Härteis Kai Lemstra
| 7 | 6 | 4 | K Krawietz A Mies
| 6 | 6 | ||||||||||||||||||||
F Martin J Ocleppo
| 4 | 6 | 2 | H Nys J O'Mara
| 1 | 4 | |||||||||||||||||||||
| Alt | A Begemann F Polášek
| 6 | 7 | Alt | A Begemann F Polášek
| 6 | 3 | ||||||||||||||||||||
 J Cerretani J Erlich
| 4 | 6 | 3 | S Arends R Arneodo
| 4 | 6 | |||||||||||||||||||||
| 3 | S Arends R Arneodo
| 6 | 1 | 3 | S Arends R Arneodo
| 7 | 5 | ||||||||||||||||||||
 P Raja A Šančić
| 6 | 7 | 2 | H Nys J O'Mara
| 5 | 7 | |||||||||||||||||||||
S Bolelli S Stakhovsky
| 7 | 6 | P Raja A Šančić
| 7 | 5 | ||||||||||||||||||||||
A Bury E Donskoy
| 6 | 6 | 2 | H Nys J O'Mara
| 6 | 7 | |||||||||||||||||||||
| 2 | H Nys J O'Mara
| 7 | 7 | ||||||||||||||||||||||||