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The Men's individual table tennis – Class 6 tournament at the 2020 Summer Paralympics in Tokyo took place during 25–28 August 2021 at Tokyo Metropolitan Gymnasium. Classes 6 – 10 are assigned to athletes who stands while competing. The lower the number, the greater the impact the impairment was on an athlete's ability to compete.
In the preliminary stage, athletes competed in five groups of three. Winners and runners-up of each group qualified for the knock-out stage. In this edition of the Games, no bronze medal match was held. Losers of each semifinal were automatically awarded a bronze medal.