St. Patrick is an unincorporated community in northwestern Turtle Creek Township, Shelby County, Ohio, United States. It lies at the intersection of Hoying and Wright-Puthoff Roads, northwest of the city of Sidney, the county seat of Shelby County. Its elevation is 971 feet and it is located at 40°22′15″N 84°17′15″W / 40.37083°N 84.28750°W.