- Robin Williams
- Andrew Martin
- Sam Neill
- Sir Richard Martin
- Embeth Davidtz
- Little Miss Amanda Martin/Portia Charney
- Oliver Platt
- Rupert Burns
- Wendy Crewson
- "Ma´am" Martin
- Hallie Kate Eisenberg
- 7-Year-Old Amanda Martin
- Stephen Root
- Dennis Mansky
- Lynne Thigpen
- President Marjorie Bota
- Bradley Whitford
- Lloyd Charney
- Kiersten Warren
- Galatea
- John Michael Higgins
- Bill Feingold
- George Wallace
- Male President
- Joe Bellan
- Robot Delivery Man
- Brett Wagner
- Robot Delivery Man
- Angela Landis
- Grace Martin
- Scott Waugh
- Motorcycle Punk
- Quinn Smith
- Frank Charney
- Kristy Connelly
- Monica
- Jay Johnston
- Charles
- Igor Hiller
- 10-Year-Old Lloyd Charney
- Lindze Letherman
- 9-Year-Old Grace Martin
- Ples Griffin
- Zimbabwe Representative
- Marcia Pizzo
- Lloyd's Wife
- Paula Dupré Pesmen
- Feingold's Assistant
- Clarke Devereux
- Priest
- Bruce Kenneth Wagner
- Engagement Party Guest
- Paula West
- Singer
- Kevin "Tiny" Ancell
- Restoration Worker
- Richard Cross
- Restoration Worker
- Adam Bryant
- Humanoid Head
- Chris Columbus
- Director, Producer
- Nicholas Kazan
- Screenwriter
- Isaac Asimov
- Writer
- Michael Barnathan
- Producer
- Gail Katz
- Producer
- Mark Radcliffe
- Producer
- Laurence Mark
- Producer
- Neal Miller
- Producer
- Wolfgang Petersen
- Producer
- Dan Kolsrud
- Executive Producer
- Phil Meheux
- Cinematographer
- Nicolas De Toth
- Film Editing
- Neil Travis
- Film Editing
- James Horner
- Original Music
- Norman Reynolds
- Production Design
- William Hiney
- Art Director
- Bruton E. Jones Jr.
- Art Director
- Mark W. Mansbridge
- Art Director
- Anne Kuljian
- Set Decoration
- Joseph G. Aulisi
- Costume Design
- Janet Hirshenson
- Casting
- Jane Jenkins
- Casting
