| 2017 Bauer Watertechnology Cup | |
|---|---|
| Date | 30 October – 5 November |
| Edition | 21st |
| Surface | Carpet |
| Location | Eckental, Germany |
| Champions | |
| Singles | |
 Maximilian Marterer | |
| Doubles | |
 Sander Arends /  Roman Jebavý | |
The 2017 Bauer Watertechnology Cup was a professional tennis tournament played on carpet courts. It was the 21st edition of the tournament which was part of the 2017 ATP Challenger Tour. It took place in Eckental, Germany between 30 October and 5 November 2017.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 BEL | Ruben Bemelmans | 84 | 1 |
| GER | Maximilian Marterer | 102 | 2 |
 KAZ | Alexander Bublik | 111 | 3 |
| GER | Yannick Hanfmann | 114 | 4 |
| GER | Dustin Brown | 119 | 5 |
 SVK | Lukáš Lacko | 124 | 6 |
 POL | Jerzy Janowicz | 136 | 7 |
 AUT | Sebastian Ofner | 137 | 8 |
The following players received wildcards into the singles main draw:
Daniel Altmaier Jeremy Jahn Daniel Masur Rudolf Molleker The following player received entry into the singles main draw using a protected ranking:
The following player received entry into the singles main draw as a special exempt:
The following players received entry from the qualifying draw:
The following player received entry as a lucky loser:
Maximilian Marterer def. Jerzy Janowicz 7–6(10–8), 3–6, 6–3. Sander Arends / Roman Jebavý def. 
Ken Skupski / Neal Skupski 6–2, 6–4.
