State highway in Logan County, Ohio, US
State Route 366 (SR 366) is an east–west state highway in the western portion of the U.S. state of Ohio. SR 366 has its western terminus at a T-intersection with U.S. Route 33 (US 33) nearly 1.50 miles (2.41 km) northwest of Lakeview. The route's eastern terminus is at State Route 117 about 1.50 miles (2.41 km) north of Huntsville. SR 366 runs along the western and southern edge of Indian Lake and provides access to homes and recreational facilities along the lake shoreline. SR 366 was designated in 1939, and was extended in 1961.