St. Onge or Saint Onge or variants thereof may refer to:
Places St. Onge, Ontario (historic), Canada St. Onge Township, Lawrence County, South Dakota, U.S. Saint Onge, South Dakota, U.S. People Doug J. St. Onge (1934–2021), American politician Guylaine St-Onge (1965–2005), Canadian actress Keith St. Onge, American barefoot water skier
See also Saintonge (disambiguation) Onge (disambiguation) Saintongeais dialect Saint-Genis-de-Saintonge, Charente-Maritime, France