Festival de las Máscaras (2015) (Spanish for "Festival of the Mask") was an annual professional wrestling major event produced by Mexican professional wrestling promotion International Wrestling Revolution Group (IWRG), which took place on May 5, 2015 in Arena Naucalpan, Naucalpan, State of Mexico, Mexico. For this annual event IWRG has gotten special permission from the "Comisión de Box y Lucha Libre Mexico D.F." (Mexico City Boxing and Wrestling Commission) to allow wrestlers who had previously been unmasked after losing a Luchas de Apuestas, or bet match, to wear their masks again for this show only.

The wrestling mask has always held a sacred place in lucha libre, carrying with it a mystique and anonymity beyond what it means to wrestlers elsewhere in the world. The ultimate humiliation a luchador can suffer is to lose a Lucha de Apuestas, or bet match. Following a loss in a Lucha de Apuesta match the masked wrestler would be forced to unmask, state their real name and then would be unable to wear that mask while wrestling anywhere in Mexico. Since 2007 the Mexican wrestling promotion International Wrestling Revolution Group (IWRG; Sometimes referred to as Grupo Internacional Revolución in Spanish) has held a special annual show where they received a waiver to the rule from the State of Mexico Wrestling Commission and wrestlers would be allowed to wear the mask they previously lost in a Lucha de Apuestas. The annual Festival de las Máscaras ("Festival of the Masks") event is also partly a celebration or homage of lucha libre history with IWRG honoring wrestlers of the past. The IWRG's Festival de las Máscaras shows, as well as the majority of the IWRG shows in general, are held in "Arena Naucalpan", owned by the promoters of IWRG and their main arena. The 2012 Festival de las Máscaras show was the sixth year in a row IWRG held the show.

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