William Albert "Bill" Yorzyk Jr. (May 29, 1933 – September 2, 2020) was an American competition swimmer, Olympic champion, and one-time world record-holder.

Failing to make the football team, but wanting to pursue a sport, Yorzyk spent a lot of time in the pool trying to improve his swimming skills in hope of acquiring survival skills and possibly making the team.

[4][5][6] Yorzyk continued to swim competitively while he attended medical school at the University of Toronto, where he qualified as an anesthesiologist.

He then served as a physician in the United States Air Force Medical Corps and was commissioned a captain.

He won the U.S. AAU indoor championship in the 220-yard butterfly in 1958, and was awarded the university's Bickle Prize as its outstanding student-athlete in 1958 and 1959.