Singles
2012 AON Open Challenger
Champion	Albert Montañés
Runner-up	Tommy Robredo
Score	6–4, 6–1

Martin Kližan was the defending champion but decided not to participate.
Albert Montañés won the title, defeating Tommy Robredo 6–4, 6–1 in the final.

Seeds

Draw

Finals

	Semifinals							Final
	7	Albert Montañés	1	77	6
	4	Filippo Volandri	6	61	3
								7	Albert Montañés	6	6
									Tommy Robredo	4	1
	5	Simone Bolelli	5	2
		Tommy Robredo	7	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1/WC	A Seppi	3	6	6
	Q	R Olivo	6	3	4			1/WC	A Seppi	6	6
		M Linzer	4	5					F Argüello	2	3
		F Argüello	6	7											1/WC	A Seppi	1	65
		D Meffert	67	4											7	A Montañés	6	77
		G Naso	79	6					G Naso	4	6	4
	Alt	Enrico Burzi	77	1	4			7	A Montañés	6	4	6
	7	A Montañés	61	6	6																	7	A Montañés	1	77	6
	4	F Volandri	78	4	6																	4	F Volandri	6	61	3
		A Giannessi	66	6	3			4	F Volandri	6	6
	Q	A Begemann	65	6	6			Q	A Begemann	3	0
		P Capdeville	77	3	2										4	F Volandri	6	6
		S Gutiérrez Ferrol	6	6												S Gutiérrez Ferrol	4	4
		K Čapkovič	4	1					S Gutiérrez Ferrol	6	2	6
	PR	F Škugor	2	2				8	F Gil	2	6	1
	8	F Gil	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	5	S Bolelli	77	3	7
		S Robert	63	6	5			5	S Bolelli	77	6
		P Červenák	7	6					P Červenák	61	1
	Q	A Brizzi	5	2											5	S Bolelli	7	6
		T Fabbiano	6	6												T Fabbiano	5	4
		P Oswald	2	4					T Fabbiano	4	6	6
		D Brown	710	77					D Brown	6	3	2
	3	P Lorenzi	68	61																		5	S Bolelli	5	2
	6/WC	L Rosol	79	2	4																		T Robredo	7	6
		T Robredo	67	6	6				T Robredo	6	2	77
		S Vagnozzi	62	6	6				S Vagnozzi	0	6	64
		G Andreozzi	77	2	1											T Robredo	3	6	6
	Q	M Crugnola	69	6	6										LL	W Trusendi	6	2	2
		M Lammer	711	1	3			Q	M Crugnola	4	6	4
	WC	F Nielsen	2	5				LL	W Trusendi	6	2	6
	LL	W Trusendi	6	7

References

• Main Draw
• Qualifying Draw