Ryan St. Onge (born February 7, 1983) is an American freestyle skier who has competed since 1997.

He won a gold medal in the aerials event at the FIS Freestyle World Ski Championships 2009 in Inawashiro.

At the 2006 Winter Olympics in Turin, St. Onge finished 16th in the aerials event.

St. Onge was named to the US team for the 2010 Winter Olympics in January 2010, qualified and finished fourth.

This biographical article relating to freestyle skiing in the United States is a stub.