Spencer Tracy

as Self (archive footage)

as Matt Drayton

as C. G. Culpepper

as Narrator (voice)

as Dan Haywood

as Father Matthew Doonan

as Henry Drummond

as Mayor Frank Skeffington

as The Old Man

as Richard Sumner

as Zachary Teller

as John J. Macreedy

as Matt Devereaux

as Clinton Jones

as Capt. Christopher Jones

as Mike Conovan

as James P. Curtayne

as Stanley Banks

as Stanley T. Banks

as Carnaghan

as Adam Bonner

as Arnold Boult

as Grant Matthews

as Col. James B. Brewton

as Pat Jamieson

as Lt. Col. Jimmy Doolittle

as George Heisler

as Pete Sandidge

as Stevie O'Malley

as Pilon

as Sam Craig

as Dr. Henry 'Harry' Jekyll / Mr. Hyde

as Edward Flanagan

as Square John Sand

as Thomas A. Edison

as Major Robert Rogers

as Karl Decker

as Henry M. Stanley

as Father Flanagan

as Gunner Morse

as John Hennessey

as Manuel Fidello

as Haggerty

as Father Tim Mullin

as Joe Wilson

as Dutch

as Ross 'Mac' McBride aka Danny Ross Ackerman

as Jim Carter

as Steven 'Steve' Grey

as Dr. Crawbett

as Bill

as Tom Garner

as Tommy Connors

as Danny Dolan

as Daniel J. 'Bugs' Raymond

as Saint Louis

as Guy