Oscar de Larrazábal was a boxer who competed in the bantamweight division at the 1936 Summer Olympics in Berlin, Germany.
At the age of 20, he competed in his first and only Olympic Games. He won his first two bouts before he lost to the American and eventual silver medalist Jackie
Wilson by knockout after only 1:30 min of the first round Later, de Larrazábal earned a Law degree from the Far Eastern University in Manila and was admitted to the Bar in 1948. He worked for the insurance company PhilAm and supported potential migrants to the USA.