- For the stadium by this name in Peru, see Estadio Alejandro Villanueva
Carlos Alejandro Villanueva Martinez (born June 4, 1908 – died April 11, 1944) was a Peruvian football (soccer) player, one of the most important South American strikers in the 1920s and 1930s.
Born in Lima, he played his entire career for Alianza Lima. For the Peruvian national team he participated at the 1930 FIFA World Cup and at 1936 Summer Olympics. He died aged 35 of tuberculosis.
Alianza Lima's stadium, located in the La Victoria district of Lima, is named after him. It is also known as "Manguera" or "Maestro" ("Master").