The Mexican National Heavyweight Championship is a Mexican Lucha Libre championship created and sanctioned by the Mexico City Boxing and Wrestling Commission. While the Commission sanctions the title, it does not promote the events in which the Championship is defended. From 1933 until the mid-1990s, Consejo Mundial de Lucha Libre (CMLL) controlled the Championship, since then AAA gained control of the championship, after the Commission granted them control of the championship. In 2006 the championship was abandoned and replaced by the AAA Mega Championship. In 2009 the championship became active again on the Mexican Independent circuit until 2013. CMLL brought the championship back in 2017. Since the championship is designated as a heavyweight title, the championship can only officially be competed for by wrestlers weighing at least 105 kg (231 lb). However, the regulation is not strictly adhered to.

Promociones Antonio Peña, S.A. de C.V. d/b/a Lucha Libre AAA Worldwide (Commonly referred to as simply AAA is a Mexican Lucha Libre promotion based in Mexico City, Mexico. It was founded in 1992, when Antonio Peña broke away from Consejo Mundial de Lucha Libre to set up his own promotion to have more creative freedom.