Sergey Kirdyapkin
 Sergey Alexandrovich Kirdyapkin (Russian: Серге́й Александрович Кирдяпкин born 18 June 1980 in Insar Mordovia) is a Russian race walker.Kirdyapkin won the gold medal in the 50 km walk at the 2012 London Olympics with an Olympic record time 3:35:59.He also won two gold medals in the 50 km walk at the 2005 World Championships in a personal best time of 3:38:08 hours and at the 2009 World Championships finishing in 3:38:35 his second fastest ever time.He is married to fellow racewalker Anisya Kirdyapkina. 