State Route 89 (SR 89) is a north–south state highway in the northern part of the U.S. state of Ohio. State Route 89 travels from its southern terminus at a T-intersection with State Route 95 approximately 5 miles (8 km) southeast of Hayesville to its northern terminus at a Y-intersection with State Route 58 nearly 3 miles (4.8 km) north of Polk.