| 2026 Open Quimper Bretagne | |
|---|---|
| Date | 27 January – 1 February |
| Edition | 17th |
| Surface | Hard (indoor) |
| Location | Quimper, France |
| 2025 Champions | |
| Singles | |
 Sascha Gueymard Wayenburg | |
| Doubles | |
| Sadio Doumbia / Fabien Reboul | |
The 2026 Open Quimper Bretagne Occidentale was a professional tennis tournament played on hard courts. It was the 17th edition of the tournament which was part of the 2026 ATP Challenger Tour. It took place in Quimper, France between 27 January and 1 February 2026.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 USA | Aleksandar Kovacevic | 56 | 1 |
| FRA | Adrian Mannarino | 69 | 2 |
 ESP | Pedro Martínez | 71 | 3 |
| FRA | Quentin Halys | 83 | 4 |
 KAZ | Alexander Shevchenko | 97 | 5 |
 GEO | Nikoloz Basilashvili | 105 | 6 |
| FRA | Benjamin Bonzi | 106 | 7 |
| USA | Mackenzie McDonald | 113 | 8 |
The following players received wildcards into the singles main draw:
Thomas Faurel Adrian Mannarino Benoît Paire The following players received entry into the singles main draw as alternates:
The following players received entry from the qualifying draw:
Federico Arnaboldi Yanis Ghazouani Durand
Maks Kaśnikowski 
Pavel Kotov Laurent Lokoli Matteo Martineau The following player received entry as a lucky loser:
vs. 
Dan Added / Arthur Bouquier vs. / 
