| 2018 Brest Challenger | |
|---|---|
| Date | 22–28 October |
| Edition | 4th |
| Surface | Hard |
| Location | Brest, France |
| Champions | |
| Singles | |
 Hubert Hurkacz | |
| Doubles | |
 Sander Gillé / Joran Vliegen | |
The 2018 Brest Challenger was a professional tennis tournament played on hard courts. It was the fourth edition of the tournament which was part of the 2018 ATP Challenger Tour. It took place in Brest, France between 22 and 28 October 2018.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 FRA | Julien Benneteau | 61 | 1 |
 ESP | Jaume Munar | 80 | 2 |
| ESP | Roberto Carballés Baena | 82 | 3 |
| POL | Hubert Hurkacz | 88 | 4 |
 CZE | Jiří Veselý | 93 | 5 |
| FRA | |||
 ITA | Lorenzo Sonego | 101 | 7 |
 USA | Michael Mmoh | 104 | 8 |
The following players received wildcards into the singles main draw:
Antoine Cornut Chauvinc Corentin Denolly Antoine Hoang Matteo Martineau The following players received entry into the singles main draw as special exempts:
The following players received entry from the qualifying draw:
The following player received entry as a lucky loser:
Hubert Hurkacz def. 
Ričardas Berankis, 7–5, 6–1. Sander Gillé / Joran Vliegen def. 
Leander Paes / 
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