Cahill: United States Marshal

John Wayne

J.D. Cahill

George Kennedy

Abe Fraser

Gary Grimes

Daniel "Danny" Cahill

Neville Brand

Lightfoot

Clay O'Brien

Billy Joe Cahill

Marie Windsor

Mrs. Hetty Green

Morgan Paull

Struther

Dan Vadis

Brownie

Royal Dano

MacDonald

Scott Walker

Ben Tildy

Denver Pyle

Denver

Jackie Coogan

Charlie Smith

Rayford Barnes

Pee Wee Simser

Dan Kemp

Joe Meehan

Harry Carey Jr.

Hank

Walter Barnes

Sheriff Grady

Paul Fix

Old Man

Pepper Martin

Hard Case

Vance Davis

Negro

Kenneth Wolger

Old Man's Grandson (as Ken Wolger)