2023 Open de Rennes

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

• ¹ Rankings are as of 28 August 2023.^[1]

The following players received wildcards into the singles main draw:

• Dan Added
• Corentin Moutet
• Lucas Poullain

The following player received entry into the singles main draw using a protected ranking:

• Lucas Pouille

The following players received entry into the singles main draw as alternates:

• Manuel Guinard
• Abdullah Shelbayh

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:

• Eliakim Coulibaly

• Maxime Cressy def. Benjamin Bonzi 6–3, 2–0 ret.

• Sander Arends / David Pel def. Antoine Escoffier / Niki Kaliyanda Poonacha 6–3, 6–2.