Betty Hutton (Holly)
Cornel Wilde (Sebastian)
Charlton Heston (Brad Braden)
Dorothy Lamour (Phyllis)
Gloria Grahame (Angel)
Josephine Whittell
Felix Adler (Himself)
Mary Field
William "Hopalong" Boyd (Hopalong Cassidy)
Mona Knox (Mona)
Dale Van Sickel (Man in train wreck)
Robert St. Angelo
Sid Saylor (Circus barker)
Hugh Prosser (Hugh)
John Parrish (Jack Lawson)
Dolores Hall
David Newell
Ottola Nesmith
Gertrude Messenger (Gertrude)
Howard Negley (Truck boss)
Keith Richards (Keith)
Ross Bagdasarian, Sr. (Man)
Erik Nelson (Boy)
Lorna Jordan (Lorna)
Claude Dunkin (Claude)
John Crawford (Jack)
Clarence Nash (Spectator)
Herbert Lytton (Foreman)
Charmienne Harker (Charmienne)
Russ Conklin (Rus)
Bruce Cameron (Bruce)
William Hall (Bill)
Noel Neill (Noel)
John Merton (Chuck)
Mona Freeman (Spectator)
Kathleen Freeman (Woman)
Bess Flowers (Spectator)
Norman Field (Truesdale)
Jimmie Dundee (Utility man)
Lester Dorr (Circus Barker)
Riccardo Cucciolla (Himself)
Lydia Clarke (Circus Girl)
Davison Clark
Ken Christy (Spectator)
Lane Chandler (Dave)
Iphigenie Castiglioni (Herself)
Stanley Andrews (Man)
Dorothy Adams
Nancy Gates (Spectator)
Everett Glass (Board member)
Lee Aaker (Boy)
Beverly Washburn (Girl)
Brad Johnson (Reporter)
Milt Kibbee (Townsman)
Fred Kohler, Jr. (Fireman)
Ethan Laidlaw (Hank)
Lou Jacobs (Himself (clown))
Brad Hatton (Osborne)
Anthony Marsh (Tony)
Greta Granstedt
Emmett Kelly, Jr. (Himself)
Antoinette Concello (Herself)
John Ringling North (Himself)
John Kellogg (Harry)
John Ridgely (Jack Steelman, Assistant Manager)
Frank Wilcox (Circus Doctor)
Bob Carson (Ringmaster)
Lillian Albertson (Buttons' Mother)
Julia Faye (Birdie)
James Stewart (Buttons, a Clown)
Henry Wilcoxon (Gregory of the FBI)
Lyle Bettger (Klaus)
Lawrence Tierney (Henderson)