Fred MacMurray as Jim Hawkins

Jack Oakie as Henry B. 'Wahoo' Jones

Jean Parker as Amanda Bailey

Lloyd Nolan as Sam 'Polka Dot' McGee

Edward Ellis as Major Bailey

Benny Bartlett as David

Frank Shannon as Captain Stafford

Frank Cordell as Ranger Ditson

Richard Carle as Casper Johnson

Jed Prouty as District Attorney Dave Twitchell

Fred Kohler as Jess Higgins

George 'Gabby' Hayes as Judge Snow

Kathryn Bates as Schoolteacher (uncredited)

Rhea Mitchell as Passenger (uncredited)

Jack Montgomery as Ranger (uncredited)

Joe Dominguez as Ranger (uncredited)

Joe Rickson as Ranger (uncredited)

Bill Gillis as Ranger

Neal Hart as Ranger (uncredited)

Cecil Kellogg as Ranger (uncredited)

Harrison Greene as Passenger, front seat (uncredited)

Frank Leyva as Mexican (uncredited)

Irving Bacon as David's father (uncredited)

Spencer Charters as Sheriff (uncredited)

Charles Middleton as Lawyer (uncredited)

Monte Vandergrift as messenger (uncredited)

William H. Strauss as Juror (uncredited)

Stanley Andrews as Henchman (uncredited)

Dell Henderson as Citizen (uncredited)

Bobby Caldwell as Boy in coach (uncredited)

Gayne Whitman as announcer (uncredited)