Young Bill Hickok is a 1940 American Western film directed by Joseph Kane and starring Roy Rogers.

An agent of an unspecified foreign power (John Miljan) plots to take over California during the confusion of the American Civil War.

The Raiders rustle the stagecoach and Pony Express horses from the various relay stations to cut all lines of communication to and from the east.

Calamity and Gabby, horse traders for the relay stations, ride up with their Indian helpers just as Bill finishes off the last few Raiders that had attacked his post.

However, Marshal Evans, head of the communication lines, wants Bill to take a shipment of gold through to the east to support the Federal war effort.