Singles
2012 San Luis Potosí Challenger
Champion	Rubén Ramírez Hidalgo
Runner-up	Paolo Lorenzi
Score	3–6, 6–3, 6–4

Santiago Giraldo was the defending champion but decided not to participate. Spanish Rubén Ramírez Hidalgo won the tournament with the score 3–6, 6–3, 6–4 in the final against Paolo Lorenzi.

Seeds

Draw

Finals

	Semifinals							Final
	1	Paolo Lorenzi	6	6
		Riccardo Ghedin	3	4
								1	Paolo Lorenzi	6	3	4
								2	Rubén Ramírez Hidalgo	3	6	6
		Agustín Velotti	2	7	4
	2	Rubén Ramírez Hidalgo	6	5	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	P Lorenzi	6	6
		S Decoud	2	1				1	P Lorenzi	6	3	6
		T Chen	1	61					S Diez	0	6	1
		S Diez	6	77											1	P Lorenzi	6	5	6
	LL	Fabiano de Paula	6	0	6										LL	Fabiano de Paula	0	7	2
	WC	M Sánchez	3	6	2			LL	Fabiano de Paula	6	77
	WC	MA Reyes-Varela	6	4	3			6	É Chvojka	4	64
	6	É Chvojka	4	6	6																	1	P Lorenzi	6	6
	3	A Brugués Davi	1r																				R Ghedin	3	4
	Q	D Zivkovic	4					Q	D Zivkovic	6	6
		A Begemann	5	6	6				A Begemann	2	1
	Q	JC Campozano	7	4	2										Q	D Zivkovic	5	6	64
	WC	Luis Patino	4	3												R Ghedin	7	3	77
		C Saavedra-Corvalán	6	6					C Saavedra Corvalán	2	7	4
		R Ghedin	2	6	6				R Ghedin	6	5	6
	5	J Mertl	6	2	2

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	8	A González	3	4
		M Demoliner	6	6					M Demoliner	6	3	1
		A Velotti	6	6					A Velotti	4	6	6
		M Lammer	4	3												A Velotti	5	77	6
		A Molteni	6	6												Marco Trungelliti	7	63	1
		G Rivera Aránguiz	4	2					A Molteni	3	1
		Marco Trungelliti	6	6					Marco Trungelliti	6	6
	4	M Viola	2	0																			A Velotti	2	7	4
	7	R Borvanov	4	77	4																	2	R Ramírez Hidalgo	6	5	6
		G Clezar	6	64	6				G Clezar	77	3	6
		F Martin	6	2	6				F Martin	63	6	2
		M Marrai	2	6	4											G Clezar	2	6	1
	Q	A Martin	67	6	6										2	R Ramírez Hidalgo	6	4	6
	WC	B Rodríguez	79	1	4			Q	A Martin	2	6	2
	Q	M Echazú	1	0				2	R Ramírez Hidalgo	6	3	6
	2	R Ramírez Hidalgo	6	6

References

• Main draw
• Qualifying draw