Singles
2011 Brasil Open
Champion	Nicolás Almagro
Runner-up	Alexandr Dolgopolov
Score	6–3, 7–6(3)

Juan Carlos Ferrero was the defending champion; however, he chose not to defend his title due to knee and wrist injuries.
Nicolás Almagro claimed the title by defeating Alexandr Dolgopolov 6–3, 7–6(3) in the final.

Seeds

The top four seeds receive a bye into the second round.

Qualifying

Draw

Finals

	Semifinals							Final
	1	Nicolás Almagro	1	6	6
	5	Juan Ignacio Chela	6	2	4
								1	Nicolás Almagro	6	7
								4	Alexandr Dolgopolov	3	63
	4	Alexandr Dolgopolov	6	6
		Ricardo Mello	2	1

Top half

	First round							Second round							Quarterfinals							Semifinals
								1	N Almagro	6	6
	WC	J Souza	6	6				WC	J Souza	2	2
	WC	G Clézar	3	2											1	N Almagro	6	6
		R Machado	6	6												R Machado	2	4
	Q	F Bagnis	4	2					R Machado	6	6
		F Volandri	7	6					F Volandri	2	1
	8	V Hănescu	5	1																		1	N Almagro	1	6	6
																						5	JI Chela	6	2	4
								3	T Bellucci	6	7
	Q	A Ghem	4	3					C Berlocq	4	5
		C Berlocq	6	6											3	T Bellucci	1	2
		Ł Kubot	65	7	7										5	JI Chela	6	6
		E Schwank	7	5	62				Ł Kubot	6	5	3
	Q	R Dutra da Silva	7	64	3			5	JI Chela	3	7	6
	5	JI Chela	64	7	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	7	P Starace	6	5	6
		P Cuevas	4	7	4			7	P Starace	6	7
	Q	L Mayer	4	6	7			Q	L Mayer	4	69
		I Andreev	6	4	62										7	P Starace	3	4
	WC	F Romboli	4	2											4	A Dolgopolov	6	6
		R Ramírez Hidalgo	6	6					R Ramírez Hidalgo	5	4
								4	A Dolgopolov	7	6
																						4	A Dolgopolov	6	6
	6	T Robredo	6	64	6																		R Mello	2	1
		F Fognini	3	7	3			6	T Robredo	4	7	2
		P Andújar	6	6					P Andújar	6	5	6
		D Gimeno Traver	3	1												P Andújar	1	0
		S Giraldo	4	3												R Mello	6	6
		R Mello	6	6					R Mello	6	6
								2	A Montañés	3	3

References

• Main Draw
• Qualifying Draw