Performers active
- The Mighty Ajax aka Joseph Milana, aka "King of Swords", aka "Arabian Sword Swallower" in Fire Acts, in Trained Animals, in WORKING ACTS, in Sword Swallowers
- Anna John Budd aka "Nature's Interrogation", aka William H. Muldoon, aka "The Originator" in Half-And-Halfs, Hermaphrodites, Half-Man Half-Woman
- Baby Thelma aka Thelma Williams in Fat Folk
- Percilla Bejano aka "The Monkey Girl", aka Percilla Lauther, aka Percilla Roman in FREAKS, in Hairy Folk
- Larry Benner in Flea Circus, in Ventriloquists, in Magicians
- Benny Rogers "The An-drog-y'nal Wonder" aka "Both Male and Female in One Body" in Half-And-Halfs, Hermaphrodites, Half-Man Half-Woman
- Bessie and Bessettes "Half Man and Half Woman aka "Brother and Sister In One Body", aka "Oriental Enigma" in Half-And-Halfs, Hermaphrodites, Half-Man Half-Woman
- The Amazing Blondini aka Mike Blondini in Sword Swallowers
- Bobby Kork aka "Cherie", aka "A Study In Sex", aka "?", aka "Unknown Sex Family" in Half-And-Halfs, Hermaphrodites, Half-Man Half-Woman
- David Logsdon "Linda Lopez" aka Linda Lopez, aka Lynn Lopez, aka Linda-Lynn in Half-And-Halfs, Hermaphrodites, Half-Man Half-Woman
- Jose de Leon aka "Armless Marvel", aka Asencion H. De Leon in FREAKS, in Armless, in Limbless
- Diane "Double-Sexed" in Half-And-Halfs, Hermaphrodites, Half-Man Half-Woman
- Diana D'Elgar "Sensation of Three Continents" aka "The Strangest Human Being Possible On This Earth", aka George Searles, aka George Val George, aka "Oola, The Ape Girl" in Half-And-Halfs, Hermaphrodites, Half-Man Half-Woman
- Francis Doran aka "The Original Maxine", aka Frankie Doran in Half-And-Halfs, Hermaphrodites, Half-Man Half-Woman, in Sword Swallowers
- William Durks aka Bill Durks, aka "The Three-Eyed Man", aka "The Man From World War Zero" in FREAKS, in Craniofacial Anomalies, in Anomalies
- Johnny Eck aka John Eckhardt, Jr., aka "The Only Living Half-Boy", aka "King of the Freaks", aka "Nature's Greatest Mistake" in FREAKS, in Legless, in Limbless, in Anomalies
- Ernie & Len aka Ernie Conklin, aka Ernie Defort in FREAKS, in Extra Limbs, in Parasitic Twins
- Esther-Lester aka "Hermaphrodite", aka Eddie Lester in Half-And-Halfs, Hermaphrodites, Half-Man Half-Woman
- Francies Benton "Male And Female In One" in Half-And-Halfs, Hermaphrodites, Half-Man Half-Woman
- Delno Fritz aka Delmo Fritz, aka William Sherman Fritz in Fire Acts, in Sword Swallowers
- Lorett Fulkerson aka "The Tattooed Lady", aka Loretta Love in Tattooed People
- Benjamin G. Green "The Alligator Man" aka "The Alligator Skin Man" in FREAKS, in Alligator Skin, Elephant Skin, Armadillo-Skin
- Roy Heckler aka Herbert Leroy Heckler in Flea Circus
- Robert Huddleston aka The Pony Boy, aka Bob Huddleston in FREAKS, in Odd Extremities, in Camel Girls, Pony Men, Dog Folk
- Jenny Lee and Elvira Snow aka Zippo and Flippo, aka Pipo and Zipo, aka Pip and Flip, aka "Pinheads from Peru" in Pinheads, Microcephalics
- Lady Little aka "The Doll Lady" in Little People, Midgets, Dwarves
- Frank Lentini aka Francesco A. Lentini, aka "3 Legged Wonder" in FREAKS, in Odd Extremities, in Extra Limbs, in Parasitic Twins
- Leo-Leola "The Human Paradox" aka Homer Tracy in Half-And-Halfs, Hermaphrodites, Half-Man Half-Woman
- Louis-Louise Logsdon aka "Sex Enigma", aka Billy Logsdon, aka "Kentucky's Sex Enigma", aka Billy Logsden, aka Pinky Pepper in Half-And-Halfs, Hermaphrodites, Half-Man Half-Woman
- Lucky Shepardson in Geeks
- Madam Olga aka Jane Barnell, aka Lady Olga, aka Princess Olga, aka Lady Olga Roderick in Bearded Ladies
- Grace McDaniel aka "The Mule-Faced Woman", aka "World's Ugliest Woman", aka Grace McDaniels [sic] in FREAKS, in Craniofacial Anomalies, in Anomalies
- Johnny Meah aka "The Czar of The Bizarre" in Fire Acts, in Sword Swallowers
- Robert Owen Melvin aka Bob Melvin, aka "The Man with Two Faces" in FREAKS, in Anomalies
- Mignon, the Penguin Girl aka Mickey Mignon, aka Ruth Berry, aka Ruth LaArgo, aka Ruth Davis in FREAKS, in Little People, Midgets, Dwarves, in Frog Folk, Turtle Folk, Bear Folk, Serpent Folk, Penguin Folk
- Moko aka "The Missing Link" in Pinheads, Microcephalics
- Johann K. Petursson aka "The Icelandic Viking Giant" in FREAKS, in Unusual Size, in Giants
- Rosa Lee aka "Armless and Harmless", aka "Armless Wonder" in Armless
- Schlitzie aka Simon Metz, aka Slitzy, aka Schlitze, aka Slitzie, aka "The Last of the Aztecs", aka "The Missing Link" in Pinheads, Microcephalics
- Grady Stiles aka "Lobster Boy", aka "Lobster Man", aka Grady Franklin Stiles, Jr. in FREAKS, in Odd Extremities, in Lobster Folk
- Tanit-Ikao in WORKING ACTS, in Circassians, in Sword Ladders, in Fakirs
- Cliff Thompson aka Clifford Marshall Thompson in Giants
- Tiny Dollita aka "That Atomic Bomb of Entertainment", aka Helen Magdelaine Pekar in Little People, Midgets, Dwarves, in Musical Acts
- Jeanie Tomaini aka Bernice Smith , aka Strangest Married Couple in FREAKS, in Legless, in Limbless
- The Torp's Loppe Cirkus aka Willy & Else Torp in Flea Circus
- Walter Wanous aka Walter Wanous, Sr.
- The Great Wilno aka Human Projectile [d] in Daredevils
- Zandau aka Zandou, aka "The Quarter Boy", aka "The Turkey Boy", aka Johnny Gilmore, aka Zandu "The Half-Man from Morocco" in FREAKS, in Odd Extremities, in Legless, in Limbless
- Zaza Frazee aka Marjorie Sylvester Frazee, aka "World's Greatest Female Freak", aka "The Bald-Headed Bearded Lady", aka "Not A Half-Man, Half-Woman" in Bearded Ladies, in Half-And-Halfs, Hermaphrodites, Half-Man Half-Woman