Singles
2012 Quito Challenger
Champion	João Souza
Runner-up	Guillaume Rufin
Score	6–2, 7–6(7–4)

Sebastián Decoud was the defending champion, but lost in the second round.
João Souza won the title, defeating Guillaume Rufin 6–2, 7–6^(7–4) in the final.

Seeds

Draw

Finals

	Semifinals							Final
	WC	Nicolás Massú	3	2
	4	João Souza	6	6
								4	João Souza	6	77
								2	Guillaume Rufin	2	64
	3	Martín Alund	711	4	62
	2	Guillaume Rufin	69	6	77

Top half

	First round							Second round							Quarterfinals							Semifinals
	1/Q	F Gil	77	5	4
		D Zivkovic	64	7	6				D Zivkovic	63	3
	Q	MA Reyes-Varela	4	4				WC	N Massú	77	6
	WC	N Massú	6	6											WC	N Massú	6	6
	Q	Juan Carvajal	65	6	2										5	E Schwank	4	2
		Chris Letcher	77	3	6				Chris Letcher	3	2
		C Lindell	1	1r				5	E Schwank	6	6
	5	E Schwank	6	4																		WC	N Massú	3	2
	4	J Souza	77	77																		4	J Souza	6	6
		M Arévalo	64	64				4	J Souza	7	62	7
		N Barrientos	4	4					D Beretta	5	77	5
		D Beretta	6	6											4	J Souza	77	3
	WC	Lucas Dages	2	2											6	V Estrella	64	0r
		J Witten	6	6					J Witten	2	2
		D Garza	4	2				6	V Estrella	6	6
	6	V Estrella	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	8	JC Campozano	77	64	7
		L Recouderc	62	77	5			8	JC Campozano	62	4
		A Molteni	6	6					A Molteni	77	6
	WC	José Chamba Gómez	0	0												A Molteni	2	66
		Guillermo Durán	6	6											3	M Alund	6	78
		K Kim	2	4					Guillermo Durán	77	64	1
		Maximiliano Estévez	4	1				3	M Alund	61	77	6
	3	M Alund	6	6																		3	M Alund	711	4	62
	7	C Salamanca	64	7	4																	2	G Rufin	69	6	77
		JS Cabal	77	5	6				JS Cabal	6	6
		S Decoud	6	6					S Decoud	4	1
	WC	Joseph Correa	1	2												JS Cabal	6	612	3
		M Demoliner	6	77											2	G Rufin	4	714	6
		G Rivera-Aránguiz	3	65					M Demoliner	1	4
	Q	G Tošić	63	1				2	G Rufin	6	6
	2	G Rufin	77	6

References

• Main Draw
• Qualifying Draw