Ka cika wannan magana: A Wasannin Olympics na shekara ta 2012 a Landan, Hardy ta lashe lambar yabo ta farko a gasar Olympics, lambar tagulla, a tseren mita 4×100 tare da Missy Franklin, Lia Neal da Allison Schmitt, sa'ad da tawagar Amirka ta zama ta uku a bayan tawagar daga Ostareliya da Netherlands. Yin iyo a mataki na biyu, Hardy ya raba kashi 53.53 kuma tawagar ta gama tare da jimlar lokaci na 3:34.24, rikodin Amurka. Ta kuma sami lambar zinare ta hanyar yin iyo don ƙungiyar Amurka da ta ci nasara a cikin zafin farko na tseren mita 4 × 100. A cikin wasanninta guda biyu, ta gama na bakwai a cikin
50 mita freestyle da na takwas a cikin 100 mita freestyle.