The Mexican National Welterweight Championship (Campeonato Nacional Peso Welter in Spanish) is a Mexican professional wrestling championship created and sanctioned by Comisión de Box y Lucha Libre Mexico D.F. (the Mexico City Boxing and Wrestling Commission). While the commission sanctions the title, it does not promote the events at which the title is defended. Consejo Mundial de Lucha Libre (CMLL) promotes the events and has the everyday control of the championship. The official definition of the welterweight weight class in Mexico is between and , but is not always strictly enforced. Because Lucha Libre emphasizes the lower weight classes, this division is considered more important than the normally more prestigious heavyweight division of a promotion. Being a professional wrestling championship, it is not won legitimately; it is instead won via a scripted ending to a match or awarded to a wrestler because of a storyline. All title matches take place under two out of three falls rules.