John WayneCol. Cord McNally Jorge RiveroCapt. Pierre Cordona Jennifer O'NeillShasta Delaney Christopher MitchumSgt. Tuscarora Phillips Susana DosamantesMaria Carmen David HuddlestonDr. Ivor Jones Mike HenryRio Lobo Sheriff 'Blue Tom' Hendricks Bill WilliamsBlackthorne Sheriff Pat Cronin Robert DonnerWhitey Carter George PlimptonGeorge, Whitey's 4th Henchman Edward FaulknerLt. Harris Peter JasonLt. Ned Forsythe Chuck CourtneyChuck, Whitey's 2nd Henchman Robert RothwellWhitey's 3rd Henchman Don 'Red' BarryFeeny - Bartender (uncredited) Sondra CurrieBlackthorne Prostitute (uncredited) Chuck Hayward(uncredited) Conrad HoolBart (uncredited) Lance HoolPicket (uncredited) John HudkinsRio Lobo Deputy (uncredited) Michael JeffersBarfly in Blackthorne (uncredited) Frank KennedyMinor Role (uncredited) / Extras Casting Richard LaMarrMan in Army Post Saloon (uncredited) John McKeeRio Lobo Deputy (uncredited) Boyd 'Red' MorganTrain Engineer (uncredited) William H. O'BrienMan in Army Post Saloon (uncredited) Gregg PalmerPete - Henchman (uncredited) Jim PrejeanUnion Soldier (uncredited) Rudy RobbinsMan (uncredited) Chuck RobersonCorporal in Baggage Car (uncredited) Danny SandsMan Delivering Message to Jail (uncredited) Cap SomersCard Player (uncredited) Bob SteeleRio Lobo Deputy (uncredited) Tommy TedescoGuitar Player in Opening Credits (uncredited) / Musician Ethan WayneBoy (uncredited) Hank WordenHank - Hotel Clerk (uncredited) Howard HawksDirector / Producer Paul HelmickAssociate Producer Robert Emmet SmithProduction Design William KiernanSet Decoration William H. ClothierDirector Of Photography Monty WestmoreMakeup Designer Leah RhodesCostume Design Dave GraysonMakeup Artist Theodore R. ParvinCostumer Luster BaylessWardrobe Master Yakima CanuttSecond Unit Director Mike ModerAssistant Director Robert SteinThird Assistant Director Marshall J. WolinsScript Supervisor Jerry GoldsmithOriginal Music Composer Jack A. FinlaySupervising Sound Editor Gene FeldmanSupervising Music Editor Arthur MortonOrchestrator Bonnie Jean DouglasMusician Alton HendricksonMusician Alfred LustgartenMusician Virginia MajewskiMusician Frederick SeykoraMusician David TamkinMusic Arranger Tommy TedescoGuitar Player in Opening Credits (uncredited) / Musician Mary Louise ZeyenMusician Robert M. BecheUnit Production Manager Frank KennedyMinor Role (uncredited) / Extras Casting Dennis L. Judd IILocation Coordinator 
