The 2009 San Luis Potosí Challenger was a professional tennis tournament played on outdoor red clay courts. It was part of the 2009 ATP Challenger Tour. It took place in San Luis Potosí, Mexico between 6 and 12 April 2009.
Singles entrants
Seeds
Rankings are as of March 23, 2009.
Other entrants
The following players received wildcards into the singles main draw: Luis Manuel Flores Mariano Puerta Manuel Sánchez Mariano Zabaleta
The following players received entry from the qualifying draw: Júlio César Campozano Juan Sebastián Cabal Alejandro González Vincent Millot
Champions
Men's singles
Santiago Giraldo def. Paolo Lorenzi, 6–2, 6–7(3), 6–2
Men's doubles
Santiago González / Horacio Zeballos def. Franco Ferreiro / Júlio Silva, 6–2, 7–6(5)