Singles
2012 Open de Rennes
Final
Champion	Kenny de Schepper
Runner-up	Illya Marchenko
Score	7–6(7–4), 6–2
Events
Singles Doubles
← 2011 · Open de Rennes · 2013 →

Julien Benneteau was the defending champion but decided not to participate.
Kenny de Schepper won the title, defeating Illya Marchenko 7–6^(7–4), 6–2 in the final.

	Semifinals							Final
		Kenny de Schepper	77	6
		Maxime Authom	63	3
									Kenny de Schepper	77	6
								Q	Illya Marchenko	64	2
	4	Olivier Rochus	6	3	5
	Q	Illya Marchenko	1	6	7

	First round							Second round							Quarterfinals							Semifinals
	1	A Bedene	77	3	4
	LL	M Fischer	65	6	6			LL	M Fischer	6	2	77
		P-H Herbert	6	77					P-H Herbert	3	6	62
		J Dasnières de Veigy	3	63											LL	M Fischer	3	4
		A Olivetti	65	2												K de Schepper	6	6
		K de Schepper	77	6					K de Schepper	6	6
		P Torebko	3	4				7	F Serra	3	4
	7	F Serra	6	6																			K de Schepper	77	6
	3	R Bemelmans	6	63	3																		M Authom	63	3
	WC	G Burquier	1	77	6			WC	G Burquier	4	4
	Q	F Martin	3	4				Q	D Thiem	6	6
	Q	D Thiem	6	6											Q	D Thiem	5	2
		M Authom	6	6												M Authom	7	6
	Q	L Grigelis	4	3					M Authom	77	77
		J Baker	4	5				5	M Llodra	64	64
	5	M Llodra	6	7

	First round							Second round							Quarterfinals							Semifinals
	6	M Bachinger	6	6
	WC	Julien Obry	1	2				6	M Bachinger	5	4
		M Przysiężny	64	6	3			WC	M Gicquel	7	6
	WC	M Gicquel	77	4	6										WC	M Gicquel	6	1	62
	WC	M Teixeira	77	6											4	O Rochus	3	6	77
		V Millot	65	4				WC	M Teixeira	2	1
		A Mannarino	4	4				4	O Rochus	6	6
	4	O Rochus	6	6																		4	O Rochus	6	3	5
	9	F Delbonis	1	63																		Q	I Marchenko	1	6	7
		Y Mertens	6	77					Y Mertens	4	2
	PR	F Krajinović	77	4	3			PR	C-A Brézac	6	6
	PR	Charles-Antoine Brézac	65	6	6										PR	C-A Brézac	610	3
		N Desein	6	78											Q	I Marchenko	712	6
		P Oswald	2	66					N Desein	3	6	2
	Q	I Marchenko	6	6				Q	I Marchenko	6	1	6
	2	A Haider-Maurer	4	4

• Main Draw
• Qualifying Draw