State Route 218 (SR 218) is a state highway in the U.S. state of California in Monterey County. It connects Route 1 with Route 68, taking an approach north of Monterey Regional Airport via the cities of Seaside and Del Rey Oaks.

The route begins at State Route 1 in Seaside. It then exits the city and enters Del Rey Oaks, where it shortly meets its east end at California State Route 68.

Except where prefixed with a letter, postmiles were measured on the road as it was in 1964, and do not necessarily reflect current mileage. The entire route is in Monterey County.