Jefferson Leonardo Pérez Quezada (born 1 July 1974) is an Ecuadorian retired race walker. He specialized in the 20 km event, in which he won the first two medals his country achieved in the Olympic Games. He won the gold medal at the 1996 Olympics, becoming the oldest-ever silver medal winner in the 20 km walk event. Following his win he embarked on a 459 km (285 mi) pilgrimage, walking, jogging and running from Quito's Franciscan cathedral to his hometown of Cuenca. In the 2008 Olympics he won silver in the same event. He announced his retirement from the sport at 2008.