Juan Martínez Brito (born May 17, 1958, in Guanabacoa, Havana[1]) is a retired discus thrower from Cuba, who represented his native country at the 1992 Summer Olympics.

His personal best is 70.00 m (229 ft 7+3⁄4 in), thrown on May 21, 1983, in Havana.

He was the winner at the AAA Championships in 1985.

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