State Route 155 (SR 155, OH 155) is an east–west state highway in the southeastern portion of the U.S. state of Ohio. The highway's western terminus is at State Route 93 in Shawnee. Its eastern terminus is at a four-way stop intersection with State Route 13 in Corning.Established in the late 1920s, State Route 155 serves as a connector route in southern Perry County. The two-lane route links Shawnee to Corning, and passes through the village of Hemlock at about the midpoint of the highway.