Washington State Route 12

Washington State Route 12 may refer to several highways in the U.S. state of Washington:
 * U.S. Route 12 in Washington
 * State Road 12 (Washington 1923-1937), the Ocean Beach Highway
 * Primary State Highway 12 (Washington) (1937-1970), the Ocean Beach Highway
 * State Road 12 (Washington 1905-1919), the Methow-Barron Road
 * Washington State Route 12 (1964-1967), now SR 14