- Woody Allen
- Leonard Zelig
- Mia Farrow
- Dr. Eudora Nesbitt Fletcher
- Patrick Horgan
- The Narrator
- John Buckwalter
- Dr. Sindell
- Marvin Chatinover
- Glandular Diagnosis Doctor
- Stanley Swerdlow
- Mexican Food Doctor
- Paul Nevens
- Dr. Birsky
- Howard Erskine
- Hypodermic Doctor
- George Hamlin
- Experimental Drugs Doctor
- Ralph Bell
- Other Doctor
- Richard Whiting
- Other Doctor
- Will Hussung
- Other Doctor
- Robert Iglesia
- Man in Barber Chair
- Eli Resnick
- Man in Park
- Edward McPhillips
- Scotsman
- Gale Hansen
- Freshman #1
- Michael Jeter
- Freshman #2
- Peter McRobbie
- Workers Rally Speaker
- Sol Lomita
- Martin Geist
- Mary Louise Wilson
- Sister Ruth
- Alice Beardsley
- Telephone Operator
- Paula Trueman
- Woman on Telephone
- Ed Lane
- Man on Telephone
- Marianne Tatum
- Actress Fletcher
- Charles Denny
- Actor Doctor
- Michael Kell
- Actor Koslow
- Garrett M. Brown
- Actor Zelig
- Sharon Ferrol-Young
- Miss Baker
- Richard Litt
- Charles Koslow
- Dimitri Vassilopoulos
- Martinez
- John Rothman
- Paul Deghuee
- Stephanie Farrow
- Meryl Fletcher
- Francis Beggins
- City Hall Speaker
- Jean Trowbridge
- Dr. Fletcher's Mother
- Ken Chapin
- On-Camera Interviewer
- Gerald Klein
- Hearst Guest
- Vincent Jerman-Jerosa
- Hearst Guest
- Deborah Rush
- Lita Fox
- Stanley Simmonds
- Lita's Lawyer
- Robert Berger
- Zelig's Lawyer
- Jeanine Jackson
- Helen Gray
- Erma Campbell
- Zelig's Wife
- Anton Marco
- Wrist Victim
- Louise Deitch
- House-Painting Victim
- Bernice Dowis
- Vilification Woman
- John Doumanian
- Greek Waiter
- Willy Holt
- Rally Chancellor
- Bernie Herold
- Carter Dean
- Susan Sontag
- Susan Sontag - Contemporary Interviews
- Irving Howe
- Irving Howe - Contemporary Interviews
- Saul Bellow
- Saul Bellow - Contemporary Interviews
- Bricktop
- Bricktop - Contemporary Interviews
- Bruno Bettelheim
- Bruno Bettelheim - Contemporary Interviews
- John Morton Blum
- John Morton Blum - Contemporary Interviews
- Marshall Cole Sr.
- Calvin Turner - Contemporary Interviews
- Ellen Garrison
- Older Dr. Fletcher - Contemporary Interviews
- Jack Cannon
- Mike Geibell - Contemporary Interviews
- Theodore R. Smits
- Ted Bierbauer - Contemporary Interviews
- Sherman Loud
- Older Paul Deghuee - Contemporary Interviews
- Elizabeth Rothschild
- Older Sister Meryl Fletcher - Contemporary Interviews
- Kuno Sponholz
- Oswald Pohl - Contemporary Interviews
- Ed Herlihy
- Pathe News Announcer
- Dwight Weist
- Hearst Metrotone Announcer
- Gordon Gould
- Radio Announcer
- Wendell Craig
- Universal Newsreel Announcer
- Jurgen Kuehn
- German U.F.A. Newsreel Announcer
- William Haines
- Self
- Dorothy Mackaill
- Self
- Max Amann
- Self (with Hitler and Streicher)
- Arthur Anderson
- Other Doctor
- Josephine Baker
- Self
- Michael Blevins
- Lizard Dancer
- Fanny Brice
- Self
- Wilhelm Brückner
- Self - Walking Behind Hitler
- James Cagney
- Self
- Al Capone
- Self
- Charles Chaplin
- Self
- Calvin Coolidge
- Self - Pinning Medal
- Marion Davies
- Self
- Dolores Del Río
- Self
- Sepp Dietrich
- Self - with Hitler and Streicher
- Joe DiMaggio
- Self - Playing Baseball
- Marie Dressler
- Self
- F. Scott Fitzgerald
- Self
- Lou Gehrig
- Self
- Joseph Goebbels
- Self
- Harold 'Red' Grange
- Self
- Hermann Göring
- Self
- Jon Hayden
- Reporter
- William Randolph Hearst
- Self
- Rudolf Hess
- Self
- Adolf Hitler
- Self
- Bobby Jones
- Self
- Elizabeth Kaitan
- German Girl
- Robert Ley
- Self - with Goebbels
- Charles A. Lindbergh
- Self
- Carole Lombard
- Self
- Adolphe Menjou
- Self
- Tom Mix
- Self - At San Simeon
- Franz Pfeffer von Salomon
- Self with Hitler and Streicher
- Mae Questel
- voice of Helen Kane
- Bubba Dean Rambo
- Charleston Dancer
- Billy Rose
- Self
- Babe Ruth
- Self - Swinging Bat
- Julius Schaub
- Self - Walking Behind Hitler
- Gregor Strasser
- Self - with Back to Hitler
- Julius Streicher
- Self - with Hitler and Hess
- Kim Johnston Ulrich
- Beauty Contestant
- Franz von Epp
- Self - with Goebbels and Ley
- Jimmy Walker
- Self - Mayor of New York
- Ruth Leon Weiman
- Mother of a Graduate
- Tug Wilson
- Police Officer
- Claire Windsor
- Self
