|Full name||George Harold Kojac|
|National team||United States|
March 2, 1910|
New York, New York
|Died||May 28, 1996
|Club||Boys' Club of New York|
|College team||Rutgers University|
George Harold Kojac (March 2, 1910 – May 28, 1996) was an American competition swimmer, two-time Olympic champion, and former world record-holder in two events.
Kojac represented the United States at the 1928 Summer Olympics in Amsterdam. As a member of the winning U.S. team in the men's 4x200-meter freestyle relay, he received a gold medal. Kojac and teammates Austin Clapp, Walter Laufer and Johnny Weissmuller set a new world record of 9:36.2 in the event final. Individually, he won another gold medal in the men's 100-meter backstroke with a second world record time of 1:08.2. He also finished fourth in the men's 100-meter freestyle in 1:00.8.
- List of Olympic medalists in swimming (men)
- List of Rutgers University people
- World record progression 100 metres backstroke
- World record progression 4 × 200 metres freestyle relay
- Sports-Reference.com, Olympic Sports, Athletes, George Kojac. Retrieved March 24, 2013.
- Sports-Reference.com, Olympic Sports, United States Swimming at the 1928 Amsterdam Summer Games. Retrieved March 24, 2013.
- Sports-Reference.com, Olympic Sports, Swimming at the 1928 Amsterdam Summer Games, Men's 100 metres Backstroke Final. Retrieved March 24, 2013.
- Sports-Reference.com, Olympic Sports, Swimming at the 1928 Amsterdam Summer Games, Men's 100 metres Freestyle Final. Retrieved March 24, 2013.
- George Kojac – Olympic results from databaseOlympics.com
- George Kojac – Olympic athlete profile at Sports-Reference.com
- George Kojac (USA) – Honor Swimmer profile at International Swimming Hall of Fame