Mount Defiance may refer to:

In Australia Name Elevation Coordinates Map number Gazetteer of Australia reference Mount Defiance (Victoria) 7420

In the United States Name Elevation Coordinates USGS Map GNIS ID Mount Defiance (California) North Chalone Peak Mount Defiance (New Jersey) Ramsey Mount Defiance (New York) Ticonderoga Mount Defiance (Oregon) Mount Defiance Mount Defiance (Tennessee) Watertown Mount Defiance (Washington) Bandera

See also Defiance Mountain Mount Defiant