Though Don "Red" Barry is the star of Jesse James, Jr., he plays a character named Johnny Barrett. The scene is a small western town, lacking telegraph service. Every time the locals try to set up communications with the Outside World, they are thwarted by an outlaw gang.
| Actor | Role |
|---|---|
 Don 'Red' BarryJohnny Barrett | Johnny Barrett |
 Lynn MerrickJoan Perry | Joan Perry |
 Al St. JohnPop Sawyer | Pop Sawyer |
 Douglas WaltonArchie McDonald | Archie McDonald |
 Karl HackettAmos Martin | Amos Martin |
 Lee ShumwayBanker Tom Perry | Banker Tom Perry |
 Stanley BlystoneSam Carson | Sam Carson |
 Jack KirkSheriff | Sheriff |
 George ChesebroHenchman Bull (uncredited) | Henchman Bull (uncredited) |
 Kermit MaynardWilson (uncredited) | Wilson (uncredited) |