Manuel Díaz (fencer)

Manuel Dionysios Díaz Martínez (April 8, 1874 – February 20, 1929) was a Cuban fencer who competed in the 1904 Summer Olympics. He was born in Havana and died in Rochester, New York.

In 1904 he won the gold medal in the individual sabre and team foil competition. He also fenced at Harvard College.