George Prifold Harrison (April 9, 1939 – October 3, 2011) was an American competition swimmer, Olympic champion, and former world record-holder in three events.

[2] He competed at the 1960 Summer Olympics in Rome, where he received a gold medal as the lead-off swimmer of the winning U.S. team in the 4×200-meter freestyle relay.

Harrison, together with his American relay teammates Dick Blick, Mike Troy and Jeff Farrell, set a new world record of 8:10.2 in the event final.

Harrison studied at Acalanes High School, and in 1965 graduated from Stanford University, where he was a member of Beta Theta Pi fraternity and was later inducted into the Swimming Hall of Fame.

He spent most of his career with Lee & Associates at Pleasanton, California, working in investment and industrial brokerage.