Singles
2023 Open de Rennes
Final
Champion	Maxime Cressy
Runner-up	Benjamin Bonzi
Score	6–3, 2–0 ret.
Events
Singles Doubles
← 2022 · Open de Rennes · 2024 →

Ugo Humbert was the defending champion^[1] but chose not to defend his title.

Maxime Cressy won the title after Benjamin Bonzi retired trailing 3–6, 0–2 in the final.

	Semifinals							Final
	8	Benjamin Bonzi	6	6
	Q	Matteo Martineau	4	4
								8	Benjamin Bonzi	3	0r
									Maxime Cressy	6	2
		Maxime Cressy	77	77
	2	Grégoire Barrère	63	64

	First round							Second round							Quarterfinals							Semifinals
	1	R Gasquet	7	6
		Jules Marie	5	3				1	R Gasquet	6	7
		L Nardi	4	6	1			Alt	M Guinard	3	5
	Alt	M Guinard	6	3	6										1	R Gasquet	65	0
		G Onclin	6	6											8	B Bonzi	77	6
		G Zeppieri	2	2					G Onclin	1	2
	Q	Maxence Beaugé	63	1				8	B Bonzi	6	6
	8	B Bonzi	77	6																		8	B Bonzi	6	6
	3	Q Halys	77	4	3																	Q	M Martineau	4	4
		A Escoffier	65	6	6				A Escoffier	5	710	2
	Alt	A Shelbayh	0	1				Q	M Martineau	7	68	6
	Q	M Martineau	6	6											Q	M Martineau	2
		T Droguet	6	2	6										PR	L Pouille	2r
	WC	D Added	1	6	4				T Droguet	4	2
	PR	L Pouille	6	3	6			PR	L Pouille	6	6
	5	C Lestienne	2	6	1

	First round							Second round							Quarterfinals							Semifinals
	7	L Broady	4	4
		Z Bergs	6	6					Z Bergs	5	3
		M Neuchrist	4	2					M Bellucci	7	6
		M Bellucci	6	6												M Bellucci	62	5
		M Cressy	77	77												M Cressy	77	7
		Em Nava	62	64					M Cressy	77	6
	LL	E Coulibaly	4	1				4/WC	C Moutet	61	2
	4/WC	C Moutet	6	6																			M Cressy	77	77
	6	R Albot	6	6																		2	G Barrère	63	64
		M Lajal	1	2				6	R Albot	6	77
	Q	G Debru	3	3				WC	L Poullain	3	62
	WC	Lucas Poullain	6	6											6	R Albot	2	2
	Q	A Moro Cañas	2	6	7										2	G Barrère	6	6
	Q	A Vatutin	6	1	5			Q	A Moro Cañas	3	6	3
	Q	K Żuk	3	1				2	G Barrère	6	4	6
	2	G Barrère	6	6

• Main draw
• Qualifying draw