Col. Cord McNally

John Wayne

Acting

Capt. Pierre Cordona

Jorge Rivero

Acting

Shasta Delaney

Jennifer O'Neill

Acting

Phillips

Jack Elam

Acting

Sgt. Tuscarora Phillips

Christopher Mitchum

Acting

Ketcham

Victor French

Acting

Maria Carmen

Susana Dosamantes

Acting

Amelita

Sherry Lansing

Acting

Dr. Ivor Jones

David Huddleston

Acting

Rio Lobo Sheriff 'Blue Tom' Hendricks

Mike Henry

Acting

Blackthorne Sheriff Pat Cronin

Bill Williams

Acting

Riley

Jim Davis

Acting

Bide

Dean Smith

Acting

Whitey Carter

Robert Donner

Acting

George, Whitey's 4th Henchman

George Plimpton

Acting

Lt. Harris

Edward Faulkner

Acting

Lt. Ned Forsythe

Peter Jason

Acting

Chuck, Whitey's 2nd Henchman

Chuck Courtney

Acting

Whitey's 3rd Henchman

Robert Rothwell

Acting

Feeny - Bartender (uncredited)

Don 'Red' Barry

Acting

Blackthorne Prostitute (uncredited)

Sondra Currie

Acting

(uncredited)

Chuck Hayward

Acting

Bart (uncredited)

Conrad Hool

Production

Picket (uncredited)

Lance Hool

Production

Rio Lobo Deputy (uncredited)

John Hudkins

Acting

Barfly in Blackthorne (uncredited)

Michael Jeffers

Acting

Minor Role (uncredited)

Frank Kennedy

Acting

Man in Army Post Saloon (uncredited)

Richard LaMarr

Acting

Rio Lobo Deputy (uncredited)

John McKee

Acting

Train Engineer (uncredited)

Boyd 'Red' Morgan

Acting

Man in Army Post Saloon (uncredited)

William H. O'Brien

Acting

Pete - Henchman (uncredited)

Gregg Palmer

Acting

Union Soldier (uncredited)

Jim Prejean

Acting

Man (uncredited)

Rudy Robbins

Acting

Corporal in Baggage Car (uncredited)

Chuck Roberson

Acting

Man Delivering Message to Jail (uncredited)

Danny Sands

Acting

Card Player (uncredited)

Cap Somers

Acting

Rio Lobo Deputy (uncredited)

Bob Steele

Acting

Guitar Player in Opening Credits (uncredited)

Tommy Tedesco

Sound

Boy (uncredited)

Ethan Wayne

Acting

Hank - Hotel Clerk (uncredited)

Hank Worden

Acting