| Olympic medal record
|Gold||1936 Berlin||Team competition|
Roberto Lorenzo Cavanagh y Hearne (November 12, 1914 – September 15, 2002) was an Argentine polo player who competed in the 1936 Summer Olympics.
He was part of the Argentine polo team, which won the gold medal. He played both matches in the tournament, the first against Mexico and the final against Great Britain.
His older brother Diego Cavanagh was also a squad member, but did not compete.