The CMLL World Lightweight Championship is a professional wrestling world championship promoted by the Consejo Mundial de Lucha Libre (CMLL), a Mexican Lucha Libre wrestling promotion (franchise). Originally, CMLL promoted the "Super Lightweight" division as part of their expansion into Japan in 1999 and 2000 and later reintroduced the division in 2003, at the same time they were running a CMLL World Super Lightweight Championship in Mexico. During Máscara Dorada's reign between 2009 and 2011, the name was changed to the CMLL Lightweight Championship, adjusting the weight limit.
The championship belt, still reads as the "CMLL Japan Super Lightweight Championship"