| 2018 Open BNP Paribas Banque de Bretagne | |
|---|---|
| Date | 29 January – 4 February |
| Edition | 8th |
| Draw | 32S / 16D |
| Surface | Hard |
| Location | Quimper, France |
| Champions | |
| Singles | |
 Quentin Halys | |
| Doubles | |
 Ken Skupski / Neal Skupski | |
The 2018 Open BNP Paribas Banque de Bretagne was a professional tennis tournament played on hard courts. It was the eighth edition of the tournament which was part of the 2018 ATP Challenger Tour. It took place in Quimper, France between 29 January and 4 February 2018.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 GRE | Stefanos Tsitsipas | 82 | 1 |
 RUS | |||
 BIH | Mirza Bašić | 128 | 3 |
 GER | Dustin Brown | 129 | 4 |
| FRA | Quentin Halys | 134 | 5 |
 SVK | Martin Kližan | 145 | 6 |
 BLR | Uladzimir Ignatik | 146 | 7 |
| GER | Yannick Maden | 149 | 8 |
The following players received wildcards into the singles main draw:
The following player received entry into the singles main draw as a special exempt:
The following player received entry into the singles main draw as an alternate:
The following players received entry from the qualifying draw:
The following players received entry as lucky losers:
Jeremy Jahn Tristan Lamasine Quentin Halys def. Alexey Vatutin 6–3, 7–6(7–1). Ken Skupski / Neal Skupski def. 
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