The 2012 Geneva Open Challenger was a professional tennis tournament played on hard courts. It was the 25th edition of the tournament which was part of the 2012 ATP Challenger Tour. It took place in Geneva, Switzerland between October 29 and November 4, 2012.
| 2012 Geneva Open Challenger | |
|---|---|
| Date | 29 October – 4 November |
| Edition | 25th |
| Surface | Hard |
| Location | Geneva, Switzerland |
| Champions | |
| Singles | |
 Marc Gicquel | |
| Doubles | |
 Johan Brunström /  Raven Klaasen | |
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 GER | Tobias Kamke | 80 | 1 |
 CZE | Lukáš Rosol | 81 | 2 |
 SVN | Aljaž Bedene | 84 | 3 |
| GER | Björn Phau | 85 | 4 |
 TUN | Malek Jaziri | 89 | 5 |
 ISR | Dudi Sela | 95 | 6 |
 BEL | Olivier Rochus | 104 | 7 |
 CAN | Vasek Pospisil | 109 | 8 |
The following players received wildcards into the singles main draw:
Stéphane Bohli Sandro Ehrat Henri Laaksonen 
Alexander RumyantsevThe following players received entry from the qualifying draw:
Adrien Bossel Grégoire Burquier Jonathan Eysseric 
Sergiy Stakhovsky Marc Gicquel def. Matthias Bachinger, 3–6, 6–3, 6–4 Johan Brunström / Raven Klaasen def. Philipp Marx / 
Florin Mergea, 7–6(7–2), 6–7(5–7), [10–5]