Betty Hutton
Holly
Cornel Wilde
The Great Sebastian
Charlton Heston
Brad Braden
Dorothy Lamour
Phyllis
Gloria Grahame
Angel
James Stewart
Buttons
Henry Wilcoxon
Agent Gregory
Lyle Bettger
Klaus
Lawrence Tierney
Mr. Henderson
Emmett Kelly
Emmett Kelly
Cucciola
Cucciola
Antoinette Concello
Antoinette Concello
John Ringling North
John Ringling North
Tuffy Genders
Tuffy Genders
John Kellogg
Harry
John Ridgely
Assistant Manager
Frank Wilcox
Doctor
Robert Carson
The Ringmaster
Lillian Albertson
Buttons' Mother
Julia Faye
Birdie
Cecil B. DeMille
Narrator (voice) (uncredited)
Lou Jacobs
Clown (uncredited)
Brad Jackson
Ringside Reporter (uncredited)
Milton Kibbee
Picked-pocket Customer (uncredited)
Davison Clark
Sam (uncredited)
Dorothy Adams
Sam's Wife (uncredited)
Arthur Q. Bryan
Ice-Cream Eating Spectator (uncredited)
Bess Flowers
Spectator (uncredited)
Bing Crosby
Spectator (uncredited)
Bob Hope
Spectator (uncredited)
Mona Freeman
Spectator (uncredited)
Kathleen Freeman
Spectator (uncredited)
William Boyd
Hopalong Cassidy (uncredited)
Beverly Washburn
Little Girl Spectator (uncredited)
Lee Aaker
Little Boy Spectator (uncredited)
Erville Alderson
Spectator (uncredited)
Oliver Blake
Spectator (uncredited)
Franklyn Farnum
Spectator (uncredited)
Nancy Gates
Spectator (uncredited)
Bob Crosby
Spectator (uncredited)
Lane Chandler
Dave (uncredited)
Edmond O'Brien
Midway Barker at End (uncredited)
Eric Alden
Canvas Man (uncredited)
Noel Neill
Noel (uncredited)
Syd Saylor
Circus Barker (uncredited)
Chuck Hamilton
Ambulance Driver (uncredited)
Daisy Earles
Midget (uncredited)
Luce Potter
Midget (uncredited)
Angelo Rossitto
Dwarf (uncredited)
Kay Wiley
(uncredited)
Lillian O'Malley
Spectator (uncredited)