| 2024 Open Saint-Brieuc | |
|---|---|
| Date | 14–20 October |
| Edition | 19th |
| Surface | Hard (indoor) |
| Location | Saint-Brieuc, France |
| Champions | |
| Singles | |
 Benjamin Bonzi | |
| Doubles | |
| Geoffrey Blancaneaux / Gabriel Debru | |
The 2024 Open Saint-Brieuc was a professional tennis tournament played on hard courts. It was the 19th edition of the tournament which was part of the 2024 ATP Challenger Tour. It took place in Saint-Brieuc, France between 14 and 20 October 2024.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| FRA | Lucas Pouille | 125 | 1 |
| FRA | Grégoire Barrère | 149 | 2 |
| FRA | Titouan Droguet | 166 | 3 |
| FRA | Benjamin Bonzi | 176 | 4 |
| FRA | Valentin Royer | 182 | 5 |
 GBR | Paul Jubb | 186 | 6 |
| FRA | Matteo Martineau | 204 | 7 |
| FRA | Antoine Escoffier | 210 | 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:
Mika Brunold Kyle Edmund Jakub Paul Lucas Poullain
Max Hans Rehberg 
Jiří Veselý The following player received entry as a lucky loser:
Benjamin Bonzi def. Lucas Pouille 6–2, 6–3. Geoffrey Blancaneaux / Gabriel Debru def. Jakub Paul / Matěj Vocel 3–3, defaulted.