Riders of the Black Hills is a 1938 American Western directed by George Sherman. The intrepid cowboys known as the Three Mesquiteers; Stony (Robert Livingston), Tucson (Ray Corrigan) and Lullaby (Max Terhune) are on the case when rancher Peg Garth's (Maude Eburne) prize racehorse is abducted by bookie Rod Stevens (Tom London) and a secret cohort to prevent it from winning an important race.
| Actor | Role |
|---|---|
 Robert LivingstonStony Brooke | Stony Brooke |
 Ray CorriganTucson Smith | Tucson Smith |
 Max TerhuneLullaby Joslin | Lullaby Joslin |
 Ann EversJoyce Garth | Joyce Garth |
 Roscoe AtesSheriff Brown (as Rosco Ates) | Sheriff Brown (as Rosco Ates) |
 Maude EburneMrs. Peggy Garth | Mrs. Peggy Garth |
 Frank MeltonDon Weston | Don Weston |
| JJohnny Lang FitzgeraldJockey Buck | Jockey Buck |
 Jack IngramHenchman Lefty | Henchman Lefty |
| JJohn P. WadeEd Harvey - Horse Trader | Ed Harvey - Horse Trader |
 Edward EarleRace Track Steward | Race Track Steward |
 Monte MontagueDeputy Sam | Deputy Sam |
| BBen HallReporter Ethelbert | Reporter Ethelbert |
 Frank O'ConnorDoctor | Doctor |
 Tom LondonHenchman Red Stevens | Henchman Red Stevens |
 Fred 'Snowflake' ToonesSnowflake (as Snowflake) | Snowflake (as Snowflake) |
 John MertonIrate Theatre Patron (uncredited) | Irate Theatre Patron (uncredited) |