Juan José Trillo (born April 17, 1909) is an Argentine boxer who competed in the 1928 Summer Olympics and in the 1932 Summer Olympics.
He was born in Buenos Aires.
In 1928 he was eliminated in the second round of the flyweight class after losing his fight to Cuthbert Taylor.
Four years later he was eliminated in the first round of the flyweight class after losing his fight to Werner Spannagel.