| Date: | 29 October – 4 November |
| Edition: | 16th |
| Surface: | Carpet |
| Location: | Eckental, Germany |
| Champs: | Daniel Brands |
| Champd: |  James Cerretani /  Adil Shamasdin |
The 2012 Bauer Watertechnology Cup was a professional tennis tournament played on carpet courts. It was the 16th edition of the tournament which was part of the 2012 ATP Challenger Tour. It took place in Eckental, Germany between October 29 and November 4, 2012.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Slovenia | Grega Žemlja | 50 | 1 | |
| Rajeev Ram | 93 | 2 | ||
| Philipp Petzschner | 97 | 3 | ||
| Daniel Brands | 100 | 4 | ||
| Ivan Dodig | 110 | 5 | ||
 Belgium | Ruben Bemelmans | 111 | 6 | |
| Canada | Frank Dancevic | 136 | 7 | |
| Dustin Brown | 144 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
Konstantin Kravchuk
Philipp Oswald (Lucky loser) Alexey VatutinSee main article: 2012 Bauer Watertechnology Cup – Singles.
See main article: 2012 Bauer Watertechnology Cup – Doubles.
James Cerretani / Adil Shamasdin def. 
Tomasz Bednarek / 
Andreas Siljeström, 6–3, 2–6, [10–4]