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| 2013 Open Harmonie mutuelle | |
|---|---|
| Date | 1–7 April | 
| Edition | 10th | 
| Draw | 32S / 16D | 
| Prize money | €30,000+H | 
| Surface | Hard | 
| Location | Saint-Brieuc, France | 
| Champions | |
| Singles | |
|   | |
| Doubles | |
|   | |
The 2013 Open Harmonie mutuelle was a professional tennis tournament played on hard courts. It was the tenth edition of the tournament which was part of the 2013 ATP Challenger Tour. It took place in Saint-Brieuc, France between 1 and 7 April 2013.
| Country | Player | Rank1 | Seed | 
|---|---|---|---|
| Kenny de Schepper | 107 | 1 | |
| Andreas Haider-Maurer | 115 | 2 | |
| Marc Gicquel | 117 | 3 | |
| Josselin Ouanna | 143 | 4 | |
| Dustin Brown | 153 | 5 | |
| Nicolas Mahut | 158 | 6 | |
| Boris Pašanski | 164 | 7 | |
| Michał Przysiężny | 165 | 8 | 
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
| Country | Player | Country | Player | Rank1 | Seed | 
|---|---|---|---|---|---|
| Dustin Brown | Rameez Junaid | 168 | 1 | ||
| Jamie Delgado | Igor Zelenay | 170 | 2 | ||
| Tomasz Bednarek | Andreas Siljeström | 197 | 3 | ||
| Martin Fischer | Mateusz Kowalczyk | 266 | 4 | 
The following pairs received wildcards into the doubles main draw: