The Arena Naucalpan 31st Anniversary Show was a major annual professional wrestling event produced and scripted by the Mexican professional wrestling promotion International Wrestling Revolution Group (IWRG), which took place on December 19, 2008 in Arena Naucalpan, Naucalpan, State of Mexico, Mexico. As the name implies the show celebrated the 31st Anniversary of the construction of Arena Naucalpan, IWRG's main venue in 1977. The show is IWRG's longest running show, predating IWRG being founded in 1996 and is the fourth oldest, still held annual show in professional wrestling.

Only two of the matches on the show has been confirmed, with a main event best two-out-of-three-falls tag team match for the IWRG Intercontinental Tag Team Championship. The team known as Los Junior Dinamitas ("The Junior Dynamites"; El Hijo del Cien Caras and Máscara Año 2000 Jr.) successfully defended the championship against Los Guapos ("The Hansome Ones"; Scorpio Jr. and Zumbido). The other confirmed match saw Los Oficiales ("The Officials"'; Oficial 911, Oficial AK-47 and Oficial Fierro) defeat the trio of Freelance, Jack and Zatura.

The location at Calle Jardín 19, Naucalpan Centro, 53000 Naucalpan de Juárez, México, Mexico was originally an indoor roller rink for the locals in the late part of the 1950s known as "Cafe Algusto". By the early-1960s, the building was sold and turned into "Arena KO Al Gusto" and became a local lucha libre or professional wrestling arena, with a ring permanently set up in the center of the building. Promoter Adolfo Moreno began holding shows on a regular basis from the late 1960s, working with various Mexican promotions such as Empresa Mexicana de Lucha Libre (EMLL) to bring lucha libre to Naucalpan. By the mid-1970s the existing building was so run down that it was no longer suitable for hosting any events. Moreno bought the old build and had it demolished, building Arena Naucalpan on the same location, becoming the permanent home of Promociones Moreno. Arena Naucalpan opened its doors for the first lucha libre show on December 17, 1977. From that point on the arena hosted regular weekly shows for Promociones Moreno and also hosted EMLL and later Universal Wrestling Association (UWA) on a regular basis. In the 1990s the UWA folded and Promociones Moreno worked primarily with EMLL, now rebranded as Consejo Mundial de Lucha Libre (CMLL).

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