State Route 11 is a north–south freeway in the eastern portion of the U.S. state of Ohio. State Route 11 is the longest state freeway in Ohio. Its southern terminus is on U.S. Route 30 in East Liverpool at the West Virginia state line on the Jennings Randolph Bridge over the Ohio River; its northern terminus is at State Route 531 in Ashtabula. The route is concurrent with U.S. Route 30 through East Liverpool and with Interstate 80 near Youngstown. Construction began on State Route 11 in 1968. The first section of the route to be completed, from Canfield to the route's western interchange with Interstate 80, opened in 1969. The entire current route was complete in 1972.

There is a rest area in Ashtabula County just north of US 322 on the southbound side of SR 11 that is unusual. Even though SR 11 is now a freeway, northbound traffic must cross over the southbound lanes at-grade to access the rest area (41°33′50″N 80°42′50″W / 41.564°N 80.714°W / 41.564; -80.714). This is an oddity for a state route that is otherwise up mostly to Interstate Highway standards and is a holdover from when SR 11 in this area was an expressway. The rest area received new turn lanes in 2011.