Singles
2015 Open de Rennes
Champion	Malek Jaziri
Runner-up	Igor Sijsling
Score	5–7, 7–5, 6–4

Steve Darcis was the defending champion, but lost in the second round. Malek Jaziri won the title defeating Igor Sijsling in the final 5–7, 7–5, 6–4

Seeds

Draw

Finals

	Semifinals							Final
	8	Illya Marchenko	66	6	4
		Igor Sijsling	78	3	6
									Igor Sijsling	7	5	4
								4	Malek Jaziri	5	7	6
	4	Malek Jaziri	65	6	77
	7	Ivan Dodig	77	3	63

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	R Haase	2	2
	WC	M Teixeira	6	6				WC	M Teixeira	3	4
		K Khachanov	4	77	77				K Khachanov	6	6
		C Hemery	6	65	64											K Khachanov	4	3
		N Gomboš	6	6											8	I Marchenko	6	6
		A Arnaboldi	4	2					N Gomboš	1	6	5
		M Authom	1	3				8	I Marchenko	6	2	7
	8	I Marchenko	6	6																		8	I Marchenko	66	6	4
	3	S Darcis	7	6																			I Sijsling	78	3	6
	Q	Jeremy Jahn	5	4				3	S Darcis	4	2
		I Sijsling	6	77					I Sijsling	6	6
	Q	R Jouan	2	64												I Sijsling	68	6	77
		J Mertl	6	6												J Mertl	710	3	63
	Q	Romain Barbosa	4	3					J Mertl	6	6
	WC	M Janvier	4	5				5	F Krajinović	3	4
	5	F Krajinović	6	7

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	6	M İlhan	2	7	6
	WC	E Couacaud	6	5	2			6	M İlhan	6	6
	Alt	J Eysseric	6	6				Alt	J Eysseric	2	4
		J-P Smith	2	4											6	M İlhan	2	6	2
		D Guez	4	4											4	M Jaziri	6	1	6
		E Ymer	6	6					E Ymer	1r
	Q	James Marsalek	1	2				4	M Jaziri	4
	4	M Jaziri	6	6																		4	M Jaziri	65	6	77
	7	I Dodig	6	6																		7	I Dodig	77	3	63
	Alt	A Smirnov	2	3				7	I Dodig	7	77
	LL	Sebastien Boltz	5	2					M Copil	5	63
		M Copil	7	6											7	I Dodig	6	4	6
	WC	A Sidorenko	77	77												V Millot	4	6	3
		L Vanni	64	62				WC	A Sidorenko	4	78	1
		V Millot	78	6					V Millot	6	66	6
	2	S Giraldo	66	2

References

• Main Draw
• Qualifying Draw