Masahiko Kimura (木村 政彦, Kimura Masahiko, September 10, 1917 – April 18, 1993) was a Japanese judoka and professional wrestler who is widely considered one of the greatest judoka of all time.^[1][2][3] He won the All-Japan Judo Championships three times in a row for the first time in history and had never lost a judo match from 1936 to 1950. An author said," In the history of judo, no one is the strongest before Kimura and no one is the strongest after Kimura."^[4] He has often been described as the strongest judoka in history.^[5] In submission grappling, the reverse ude-garami arm lock is often called the "Kimura",^[6] due to his famous victory over Gracie jiu-jitsu founder Hélio Gracie. In the Japanese professional wrestling world, he is known for the controversial match he had with Rikidōzan.