Route 238 is a numbered state highway running 1.5 miles (2.4 km) in Newport, Rhode Island.

Route 238 is a spur from Route 138 providing access to Goat Island in Newport. It begins at the intersection of the Newport Bridge Access Road and J.T. Connell Highway, and runs south along J.T. Connell Highway, Farewell Street, America's Cup Avenue, and the Goat Island Connector. Until it reaches the Goat Island Connector, it is also concurrent with Route 138A.