- Lluís Soler
- Alvah Bessie
- Brendan Price
- Alvah Bessie
- Alvah Bessie
- Self
- Moe Fishman
- Self - Member of the Abraham Lincoln Brigade
- Susan Sarandon
- Self
- Román Gubern
- Self - Film Historian
- Dan Bessie
- Self - Alvah Bessie's Son
- Walter Bernstein
- Self
- Arthur Laurents
- Self
- Patrick McGilligan
- Self - Author of 'Tender Comrades'
- Eric Johnston
- Self - Motion Pictures Association
- James Philips
- Voice over off line
- Lauren Bacall
- Rose Cullen / Self (archive footage)
- Ingrid Bergman
- MarÃa
- Herbert J. Biberman
- Self
- Humphrey Bogart
- Rick Blaine / Self (archive footage)
- Charles Boyer
- Luis Denard
- Joseph Breen
- Self
- Madeleine Carroll
- Norma
- Claudette Colbert
- Augusta Nash
- Lester Cole
- Self
- Gary Cooper
- Robert Jordan
- Bette Davis
- Sara Muller
- Edward Dmytryk
- Self
- Dwight D. Eisenhower
- Self
- Henry Fonda
- Marco
- Francisco Franco
- Self
- John Garfield
- John 'Kit' McKittrick / Self (archive footage)
- Murray Hamilton
- Brooks Carpenter
- Ernest Hemingway
- Self
- Hirohito
- Self
- Adolf Hitler
- Self
- Danny Kaye
- Self
- Ring Lardner Jr.
- Self
- John Howard Lawson
- Self
- Michael Lonsdale
- Reporter
- Albert Maltz
- Self
- Christian Marquand
- Zaganar
- Ray Milland
- Tom Martin
- Zero Mostel
- Hecky Brown
- Michael Murphy
- Alfred Miller
- Benito Mussolini
- Self
- Patrick O'Neal
- George Bissinger
- Samuel Ornitz
- Self
- Gregory Peck
- Harry Street / Manuel Artiguez (archive footage)
- Anthony Quinn
- Viñolas
- Claude Rains
- Captain Louis Renault
- Franklin D. Roosevelt
- Self
- Adrian Scott
- Self
- Joseph Stalin
- Self
- Mark Stevens
- Dr. David Foster
- Barbra Streisand
- Katie
- Dalton Trumbo
- Self
- Manuela Vargas
- MarÃa
- James Woods
- Frankie McVeigh
