Jack Weyman Nelson (November 8, 1931 – November 5, 2014) was an All-American competition swimmer for the University of Miami who competed in the 1956 Melbourne Olympics in butterfly and served as a Hall of Fame swimming coach at Fort Lauderdale's Pine Crest School, the Jack Nelson Swim Club, and the University of Miami.

Nelson won at nearly every distance in University of Miami dual meets, going undefeated for over two years.

[1] Nelson represented the United States at the 1956 Summer Olympics in Melbourne, Australia, and competed in the men's 200-meter butterfly, finishing fourth in the event final.

[4][5][1] Outstanding swimmers he coached included 1972 Munich Olympian, 1974 4 x 100 meter freestyle relay world record holder and Pine Crest graduate Ann Marshall, and 1968 Canadian Olympic medalist Marilyn Corson.

He also coached David Edgar an NCAA championship freestyle sprinter from the U. of Tennessee and 1972 Olympic gold medalist.

He led several swimmers world record times, including Laurie Lehner, Ann Marshall and Andy Coan.