| Gerardo Rosario | |
| Nickname: | Ral |
| National Team: |  Philippines |
| Birth Date: | 14 August 1952 |
| Strokes: | Backstroke, freestyle, individual medley |
| Show-Medals: | yes |
Gerardo Rosario (born 14 August 1957) is a Filipino former swimmer who has competed in the Summer Olympic Games.[1]
Rosario competed in the Summer Olympics, competing for his home country Philippines in the 1972 and 1976 editions.[1]
Rosario was also a competitor in the Asian Games, first competing in the 1974 Asian Games in Tehran where he won two silvers in the 100-meter and 200-meter back stroke, and three bronzes in the 4x100-meter and 4x200-meter freestyle relays, and the 4x100-meter medley relay.[2] He is also the gold medalist for the 200-meter men's freestyle event of the 1978 Asian Games.[3] He also won two bronzes in the 4x100-meter medley relay and 4x200-meter freestyle relay.[2]
He was coached by Rick Powers.[4]
In 2016, Rosario, along with 16 others, was inducted in the Philippine Sports Hall of Fame.[5]
Rosario was elected as corporate secretary of Philippine Swimming, Inc. (PSI; then known as Philippine Amateur Swimming Association or PASA), the governing body of swimming in the Philippines, in 2010.[3] In April 2017, Rosario was designated as Officer in Charge or Acting President of PSI.[6]