List of Famous people born on October 20th

Daniel Edgar Sickles was an American politician, soldier, and diplomat.

Matthew Linzee Sands was an American physicist and educator best known as a co-author of the Feynman Lectures on Physics. A graduate of Rice University, Sands served with the Naval Ordnance Laboratory and the Manhattan Project's Los Alamos Laboratory during World War II.

Guillermo Valencia Castillo was a Colombian poet, translator, and politician. Valencia was a pioneer of Modernism in Colombia and a member of the Colombian Conservative Party. He was the father of five children, including Guillermo León Valencia (1909–1971), Colombian president during 1962–1966, and Josefina Valencia Muñoz, Governor of Cauca.

Rodolfo Halffter Escriche was a Spanish composer.

Nicholas Viscardi, known professionally as Nick Cardy and Nick Cardi, was an American comics artist best known for his DC Comics work on Aquaman, the Teen Titans and other major characters. Cardy was inducted into the Will Eisner Comic Book Hall of Fame in 2005.

Richard Loncraine is a British film and television director.

Alfonso Gesualdo di Conza was an Italian Cardinal starting in 1561. He was from Naples. His attendance at the papal conclave of 1565-1566 at the age of only 25 makes him one of the youngest Cardinals ever to participate in a papal election.