2023 Open Saint-Brieuc

The 2023 Open Saint-Brieuc was a professional tennis tournament played on hard courts. It was the 18th edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Saint-Brieuc, France between 20 and 26 March 2023.

Seeds

 * Rankings are as of 6 March 2023.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇫🇷 Antoine Ghibaudo
 * 🇫🇷 Sascha Gueymard Wayenburg
 * 🇫🇷 Pierre-Hugues Herbert

The following players received entry into the singles main draw as alternates:
 * 🇫🇷 Clément Chidekh
 * 🇫🇷 Calvin Hemery
 * 🇮🇹 Giovanni Oradini

The following players received entry from the qualifying draw:
 * 🇫🇷 Constantin Bittoun Kouzmine
 * 🇫🇷 Mathias Bourgue
 * 🇫🇷 Jurgen Briand
 * 🇪🇪 Mark Lajal
 * 🇫🇷 Lucas Poullain
 * 🇫🇷 Alexandre Reco

Singles

 * 🇱🇹 Ričardas Berankis def. 🇫🇷 Dan Added 6–3, 6–7(3–7), 7–6(7–5).

Doubles

 * 🇫🇷 Dan Added / 🇫🇷 Albano Olivetti def. 🇫🇮 Patrik Niklas-Salminen / Bart Stevens 4–6, 7–6(9–7), [10–6].