Darrell Horn (born August 5, 1939) is an American track and field athlete known for jumping events. He was the silver medalist in the long jump at the 1963 Pan American Games. As a long jumper Horn also finished second in the American championships twice, 1963 and 1965, each time beaten by world record holder Ralph Boston. He also competed in the Olympic Trials twice in the long jump 1960 and 1964, finishing in fifth place both times. He ranked in the worldwide top 10 six times between 1960 and 1966, peaking at #4 in 1963.