| John Murphy | |
| Fullname: | John Joseph Murphy |
| National Team: | United States |
| Strokes: | Backstroke, freestyle |
| Club: | Hinsdale Swim Club |
| Collegeteam: | Indiana University |
| Birth Date: | July 19, 1953 |
| Birth Place: | Chicago, Illinois, U.S. |
| Height: | 6feet |
| Weight: | 194lb |
John Joseph Murphy (born July 19, 1953) is an American former backstroke and freestyle swimmer who won a gold medal as a member of the U.S. team in the men's 4×100-meter freestyle relay at the 1972 Summer Olympics in Munich, Germany. At the 1972 Olympics, the 19-year-old also earned a bronze medal in the men's 100-meter backstroke. He attended Indiana University, where he swam for coach James Counsilman's Indiana Hoosiers swim team in National Collegiate Athletic Association (NCAA) competition.
Murphy currently resides in Los Alamos, New Mexico, and serves as a youth swim team coach.