State Route 303 (SR 303) is a 75.71-mile-long (121.84 km) Ohio State Route that runs between Wakeman and Windham in the US state of Ohio. The highway is not listed on the National Highway System. Most of the route is a rural two-lane highway and passes through farmland, woodland, and residential properties. The route passes through the Cuyahoga Valley National Park. For some of its path, SR 303 runs generally parallel to the south of the Ohio Turnpike. SR 303 was first signed in 1932 on a section of the same alignment as today. The highway was extended towards the west in 1935. The highway was extended again in 1937. The eastern terminus was rerouted to its current intersection in the mid-1950s.

State Route 60 is a north–south state highway that runs the entire length of the U.S. state of Ohio, from the Williamstown Bridge over the Ohio River in Marietta to U.S. Route 6 near Lake Erie in Vermilion. It is the seventh longest state route in Ohio.