State Route 83 is a north–south state highway in the U.S. state of Ohio. Its southern terminus is near the town of Beverly at State Route 60, and its northern terminus is overlooking Lake Erie at U.S. Route 6 in Avon Lake.

A portion of State Route 83 is part of the Morgan County Scenic Byway.

Route 83C is an unsigned, ¾-mile route connecting SR 83 with SR 10 in North Ridgeville. Route 83C runs west from SR 83 along Butternut Ridge Road, and then north on Lorain Road to intersect SR 10. SR 83C then intersects Chestnut Ridge Road and runs eastbound along Chestnut Ridge Road until intersecting SR 83 again, where SR 83C ends. Route 83C exists because SR 83 bridges over SR 10 and would not have intersected SR 10 otherwise. The route is marked "To SR 10" westbound and "To SR 83" eastbound.