| 2017 Brest Challenger | |
|---|---|
| Date | 23–29 October |
| Edition | 3rd |
| Surface | Hard |
| Location | Brest, France |
| Champions | |
| Singles | |
 Corentin Moutet | |
| Doubles | |
 Sander Arends /  Antonio Šančić | |
The 2017 Brest Challenger was a professional tennis tournament played on hard courts. It was the third edition of the tournament which was part of the 2017 ATP Challenger Tour. It took place in Brest, France between 23 and 29 October 2017.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 RUS | Daniil Medvedev | 67 | 1 |
 ROU | Marius Copil | 74 | 2 |
 SVK | Norbert Gombos | 83 | 3 |
| FRA | Jérémy Chardy | 84 | 4 |
 TUN | Malek Jaziri | 89 | 5 |
 SRB | Laslo Đere | 90 | 6 |
| RUS | Andrey Kuznetsov | 95 | 7 |
 ITA | Matteo Berrettini | 120 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry into the singles main draw as special exempts:
The following player received entry into the singles main draw as an alternate:
The following players received entry from the qualifying draw:
Tristan Lamasine 
Illya Marchenko Gianni Mina 
Yannik ReuterThe following player received entry as a lucky loser:
Corentin Moutet def. 
Stefanos Tsitsipas 6–2, 7–6(10–8). Sander Arends / Antonio Šančić def. 
Scott Clayton / 
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