State Route 270 (SR 270) is a state highway located in the U.S. state of California in Mono County. It is a spur route off of U.S. Route 395 south of Bridgeport, leading into Bodie State Historic Park.

The route connects U.S. Route 395 with Bodie State Historic Park. A few miles before entering this park, which holds a preserved ghost town, are unpaved.

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 Mono County.