The IWRG Rey del Ring refers both to an annual tournament and a professional wrestling championship promoted by the Mexican Lucha libre professional wrestling promotion International Wrestling Revolution Group (IWRG). From 2002 until 2011 the IWRG Rey del Ring only referred to an annual 30-man tournament, but as of the 2011 tournament there is also a physical championship belt that is and can be defended throughout the year.

The IWRG Intercontinental Middleweight Championship is a professional wrestling championship promoted by the Mexican wrestling promotion International Wrestling Revolution Group (IWRG). The official definition of the Middleweight weight class in Mexico is between 82 kg (181 lb) and 87 kg (192 lb), but the weight limits are not always strictly adhered to. Because Lucha Libre puts more emphasis on the lower weightclasses, this division is considered more important than the normally more prestigious heavyweight division of the promotion.