Richard Leon Vizcaya (born January 7, 1976, in Caracas, Distrito Capital) is a Venezuelan judoka, who played for the lightweight category.

[2] Leon made his official debut for the 2004 Summer Olympics in Athens, where he lost the first preliminary match of men's lightweight class (73 kg), with an ippon and an osoto otoshi (big outer drop), to Moldova's Victor Bivol.

Because his opponent advanced further into the semi-finals, Leon was offered another shot for the bronze medal by entering the repechage bouts, but was defeated in the first round by Iran's Hamed Malekmohammadi, who successfully scored an ippon and a sukui-nage (double leg takedown), at one minute and fifty-four seconds.

At the 2008 Summer Olympics in Beijing, Leon competed for the second time in men's 73 kg class.

Leon lost the first preliminary match, by a koka and a golden score, to China's Si Rijigawa, although he received a penalty for false attack.