California or Bust is a 1927 American silent comedy-drama film, directed by Phil Rosen.

It stars George O'Hara, Helen Foster, and John Steppling, and was released on January 9, 1927.

While they are driving west to California, the president of a motor company, Holtwood, and his daughter Nadine are passing through Rockett when their car breaks down.

When they get back to the garage, Holtwood contacts his chief engineer, Wade Rexton, to come out from California to take a look at the motor.

In November 1926, Byron Morgan finished the screenplay for California or Bust, which was to be a vehicle for George O'Hara.