| 2024 Brest Challenger | |
|---|---|
| Date | 21–27 October |
| Edition | 9th |
| Surface | Hard (indoor) |
| Location | Brest, France |
| Champions | |
| Singles | |
 Otto Virtanen | |
| Doubles | |
 Nicolás Barrientos /  Skander Mansouri | |
The 2024 Brest Challenger , known as the Brest Open Groupe Vert, was a professional tennis tournament played on hard courts. It was the ninth edition of the tournament which was part of the 2024 ATP Challenger Tour. It took place in Brest, France between 21 and 27 October 2024.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 FRA | |||
 BIH | Damir Džumhur | 100 | 2 |
| FRA | Harold Mayot | 103 | 3 |
 ITA | |||
 GBR | Billy Harris | 110 | 5 |
 KAZ | Mikhail Kukushkin | 111 | 6 |
 SRB | Laslo Djere | 113 | 7 |
| FIN | Otto Virtanen | 116 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry into the singles main draw as alternates:
The following players received entry from the qualifying draw:
Alexis Gautier Calvin Hemery 
Jakub Paul 
Zsombor Piros 
Max Hans Rehberg 
Alexey Vatutin The following players received entry as lucky losers:
Otto Virtanen def. Benjamin Bonzi 6–4, 4–6, 7–6(8–6). Nicolás Barrientos / Skander Mansouri def. Jakub Paul / 
Matěj Vocel 7–5, 4–6, [10–5].
