Sin Piedad 2001 (Spanish for "Without pity") was a professional wrestling Pay-Per-View (PPV) produced by Consejo Mundial de Lucha Libre (CMLL), which took place on December 14, 2001 in Arena México, Mexico City, Mexico. The main event was a Lucha de Apuesta, hair vs. hair match between Shocker and Emilio Charles, Jr.. The show featured a further Lucha de Apuesta match on the undercard, pitting Tarzan Boy against Brazo de Plata. The show featured four additional matches, three Six-man "Lucha Libre rules" tag team matches and an Eight-man Atómicos match that featured Rey Misterio, Jr. between his time in World Championship Wrestling and World Wrestling Entertainment.