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