 | Harry Earles Hans |
 | Olga Baclanova Cleopatra |
 | Daisy Earles Frieda |
 | Henry Victor Hercules |
 | Wallace Ford Phroso |
 | Leila Hyams Venus |
 | Roscoe Ates Roscoe |
 | Angelo Rossitto Angeleno |
 | Jerry Austin Knife-Throwing Dwarf (uncredited) |
 | Daisy Hilton Siamese Twin |
 | Violet Hilton Siamese Twin |
| Schlitzie Himself |
 | Josephine Joseph Half Woman-Half Man |
 | Johnny Eck Half Boy |
 | Frances O'Connor Armless Girl |
| Peter Robinson Human Skeleton |
 | Olga Roderick Bearded Lady |
| Koo Koo Herself |
 | Prince Randian The Living Torso |
| Martha Morris Armless Girl |
| Elvira Snow Pinhead |
| Jenny Lee Snow Pinhead |
| Elizabeth Green Bird Girl |
 | Edward Brophy Rollo Brother |
 | Matt McHugh Rollo Brother |
 | Rose Dione Madame Tetrallini |
 | John Aasen Giant (uncredited) |
 | Ernie Adams Sideshow Patron (uncredited) |
| Demetrius Alexis Mr. Rogers (uncredited) |
 | Hooper Atchley Doctoer (uncredited) |
 | Sidney Bracey Hans' Butler (uncredited) |
 | Mathilde Comont Madame Bartet (uncredited) |
 | Albert Conti Landowner (uncredited) |
| Tiny Doll (uncredited) |
| Edith Crawling Girl (uncredited) |
| Delmo Fritz Sword-Swallower (uncredited) |
 | Murray Kinnell Freakshow Barker (uncredited) |
 | Constantine Romanoff Man bringing Friedas Horse (uncredited) |
 | Michael Visaroff Jean (uncredited) |
| Editing | |
| Basil Wrangell | Editor |
Directing | |
| Tod Browning | Director |
Camera | |
| Merritt B. Gerstad | Director of Photography |
Production | |
| Tod Browning | Producer |
Art | |
| Merrill Pye | Art Direction |
Production | |
| Irving Thalberg | Producer |
Art | |
| Cedric Gibbons | Art Direction |
Writing | |
| Willis Goldbeck | Screenplay |
| Leon Gordon | Screenplay |
| Clarence Aaron 'Tod' Robbins | Story |
Sound | |
| Douglas Shearer | Recording Supervision |
