The AAA World Cruiserweight Championship is a professional wrestling championship contested for in the Mexican lucha libre promotion Lucha Libre AAA Worldwide (AAA). The championship cannot be competed for by anyone who is over the Cruiserweight division weight limit of 105 kg (231 lb). Traditionally this division is labelled as the "Junior Heavyweight" division in Mexico while "Cruiserweight" is a term more used in the United States or Canada.

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.