The 20. Aniversario de Arena México (Spanish for "Arena México 20th Anniversary") show was a major professional wrestling show produced by Empresa Mexicana de Lucha Libre (EMLL) to commemorate the opening of Arena México, the promotion's main venue, in 1956. The event took place on April 23, 1976 as part of a special Friday Night Super Viernes series of shows.
- (c) refers to the champion(s) heading into the match.
- Manuel Robles defeated Estrella Blanca
- Carlos Plata defeated Karloff Lagarde
- Enrique Vera and Mano Negra defeated Los Gemelos Diablo (Gemelo Diablo I and Gemelo Diablo II) in a Best two-out-of-three falls tag team match
- El Halcón and El Santo defeated Adorable Rubi and Alfonso Dantés in a Best two-out-of-three falls tag team match
- Perro Aguayo (c) defeated Ringo Mendoza in a Best two-out-of-three falls match to retain the NWA World Middleweight Championship
- Fishman defeated El Faraón in a Best two-out-of-three falls Lucha de Apuestas Mask vs. Mask match