State Route 357 (SR 357) is a 2.353-mile-long (3.787 km) north–south state highway in the northern portion of U.S. state of Ohio. Existing entirely on South Bass Island in Lake Erie, the highway begins at its southern terminus of West Shore Boulevard, about 0.75 miles (1.21 km) west of Put-in-Bay. SR 357 then travels northeast to its northern terminus at a dead end at Lake Erie, approximately 2 miles (3.2 km) east of Put-in-Bay. SR 357 is one of two Ohio state routes on Lake Erie islands.