| 2023 Open de Rennes | |
|---|---|
| Date | 11–17 September |
| Edition | 17th |
| Surface | Hard (Indoor) |
| Location | Rennes, France |
| Champions | |
| Singles | |
 Maxime Cressy | |
| Doubles | |
 Sander Arends / David Pel | |
The 2023 Open de Rennes was a professional tennis tournament played on hard courts. It was the 17th edition of the tournament and part of the 2023 ATP Challenger Tour. It took place in Rennes, France between 11 and 17 September 2023.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 FRA | Richard Gasquet | 55 | 1 |
| FRA | Grégoire Barrère | 59 | 2 |
| FRA | Quentin Halys | 70 | 3 |
| FRA | Corentin Moutet | 72 | 4 |
| FRA | Constant Lestienne | 101 | 5 |
 MDA | Radu Albot | 102 | 6 |
 GBR | Liam Broady | 107 | 7 |
| FRA | Benjamin Bonzi | 108 | 8 |
The following players received wildcards into the singles main draw:
Dan Added Corentin Moutet Lucas PoullainThe following player received entry into the singles main draw using a protected ranking:
The following players received entry into the singles main draw as alternates:
The following players received entry from the qualifying draw:
Maxence Beaugé Gabriel Debru Mattteo Martineau
Alejandro Moro Cañas 
Alexey Vatutin 
Kacper Żuk The following player received entry as a lucky loser:
Maxime Cressy def. Benjamin Bonzi 6–3, 2–0 ret. Sander Arends / David Pel def. Antoine Escoffier / 
Niki Kaliyanda Poonacha 6–3, 6–2.The 2017 Internazionali di Tennis Città di Perugia was a professional tennis tournament played on clay courts. It was the third edition of the tournament which was part of the 2017 ATP Challenger Tour. It took place in Perugia, Italy between 11 and 16 July 2017.
The 2017 Trofeo Città di Brescia was a professional tennis tournament played on carpet courts. It was the fourth edition of the tournament which was part of the 2017 ATP Challenger Tour. It took place in Brescia, Italy between 13 and 19 November 2017.
The 2019 Internazionali di Tennis Città di Vicenza was a professional tennis tournament played on clay courts. It was the sixth edition of the tournament which was part of the 2019 ATP Challenger Tour. It took place in Vicenza, Italy between 27 May and 2 June 2019.
The 2019 Bratislava Open was a professional tennis tournament played on clay courts. It was the first edition of the tournament which was part of the 2019 ATP Challenger Tour. It took place in Bratislava, Slovakia between 17 and 23 June 2019.
The 2019 President's Cup was a professional tennis tournament played on outdoor hard courts. It was the fourteenth (ATP) and eleventh (ITF) editions of the tournament and was part of the 2019 ATP Challenger Tour and the 2019 ITF Women's World Tennis Tour. It took place in Nur-Sultan, Kazakhstan, on 15–21 July 2019.
The 2021 Internazionali di Tennis Città di Forlì was a professional tennis tournament played on clay courts. It was the second edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Forlì, Italy between 14 and 20 June 2021.
The 2021 Aspria Tennis Cup was a professional tennis tournament played on clay courts. It was the fifteenth edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Milan, Italy between 21 and 27 June 2021.
The 2021 San Marino Open was a professional tennis tournament played on clay courts. The 28th edition of the tournament, which was part of the 2021 ATP Challenger Tour, took place in City of San Marino, San Marino between 9 and 15 August 2021.
The 2021 Open de Rennes was a professional tennis tournament played on hard courts. It was the fifteenth edition of the tournament and part of the 2021 ATP Challenger Tour. It took place in Rennes, France between 13 and 19 September 2021.
The 2021 Tennis Napoli Cup was a professional tennis tournament played on clay courts. It was the 20th edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Naples, Italy between 4 and 10 October 2021.
The 2021 Città di Forlì III was a professional tennis tournament played on hard courts. It was the second edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Forlì, Italy between 6 and 12 December 2021.
The 2021 Rio Tennis Classic was a professional tennis tournament played on hard courts. It was the second edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Rio de Janeiro, Brazil from 13 to 19 December 2021.
The 2022 Città di Forlì was a professional tennis tournament played on hard courts. It was the third edition of the tournament which was part of the 2022 ATP Challenger Tour. It took place in Forlì, Italy between 3 and 9 January 2022.
The 2022 Città di Forlì II was a professional tennis tournament played on hard courts. It was the fourth edition of the tournament which was part of the 2022 ATP Challenger Tour. It took place in Forlì, Italy between 10 and 16 January 2022.
The 2022 Internazionali di Tennis Città di Perugia was a professional tennis tournament played on clay courts. It was the seventh edition of the tournament which was part of the 2022 ATP Challenger Tour. It took place in Perugia, Italy between 6 and 12 June 2022.
The 2022 Salzburg Open was a professional tennis tournament played on outdoor clay courts. It was the second edition of the tournament which was part of the 2022 ATP Challenger Tour. It took place in Anif (Salzburg), Austria between 4 and 10 July 2022.
The 2022 Città di Como Challenger was a professional tennis tournament played on clay courts. It was the sixteenth edition of the tournament which was part of the 2022 ATP Challenger Tour. It took place in Como, Italy between 29 August and 4 September 2022.
The 2022 NÖ Open was a professional tennis tournament played on clay courts. It was the second edition of the tournament which was part of the 2022 ATP Challenger Tour. It took place in Tulln an der Donau, Austria between 5 and 10 September 2022.
The 2022 Open de Rennes was a professional tennis tournament played on hard courts. It was the sixteenth edition of the tournament and part of the 2022 ATP Challenger Tour. It took place in Rennes, France between 12 and 18 September 2022.
The 2022 Parma Challenger was a professional tennis tournament played on clay courts. It was the first edition of the tournament which was part of the 2022 ATP Challenger Tour. It took place in Parma, Italy between 3 and 9 October 2022.
