Ethan Hawke (Vincent Freeman), Jude Law (Jerome Eugene Morrow), Gore Vidal (Director Josef), Uma Thurman (Irene Cassini), Alan Arkin (Detective Hugo), Xander Berkeley (Dr. Lamar), Jayne Brook (Marie Freeman) more..., William Lee Scott (Young Anton Freeman), Loren Dean (Adult Anton Freeman), Ernest Borgnine (Caesar), Tony Shalhoub ("German"), Una Damon (Head Nurse), Elias Koteas (Antonio Freeman), Maya Rudolph (Delivery Nurse), Elizabeth Dennehy (Preschool Teacher), Blair Underwood (Geneticist), Mason Gamble (Vincent Freeman - Boy), Vincent Nielson (Anton Freeman - Boy), Chad Christ (Vincent Freeman - Teen), Clarence Graham (Personnel Officer), Carlton Benbry (Gattaca Hoover), Grace Sullivan (Sequencing Customer), Ken Marino (Sequencing Technician), Cynthia Martells (Cavendish), Gabrielle Reece (Gattaca Trainer), Ryan Dorin (Twelve-Fingered Pianist), Dean Norris (Cop on the Beat), Russell Milton (Gattaca Detective), George Marshall Ruge (Beaten Detective), Steve Bessen (Blood Test Detective), Lindsey Ginter (Mission Commander), Greg Sestero (Gattacan Citizen)

Danny DeVito (Producer), Michael Nyman (Original Music Composer), Slawomir Idziak (Director of Photography), Lisa Zeno Churgin (Editor), Colleen Atwood (Costume Design), Michael Shamberg (Producer), Stacey Sher (Producer) more..., Francine Maisler (Casting), Jan Roelfs (Production Design), Sarah Knowles (Art Direction), Nancy Nye (Set Decoration), Lizbeth Williamson (Makeup Artist), Jill Rockow (Makeup Artist), Toni-Ann Walker (Hairstylist), R. Scott Doran (Leadman), Jim Ondrejko (Construction Coordinator), Stephen Alesch (Set Designer), Randall D. Wilkins (Set Designer), Steven Ticknor (Sound Effects Editor), Doug Hemphill (Sound Re-Recording Mixer), Paul Massey (Sound Re-Recording Mixer), Richard King (Supervising Sound Editor), Gary D'Amico (Special Effects Coordinator), Daniele Colajacomo (Visual Effects Supervisor), Jerry Pooler (Visual Effects Supervisor), Chris Watts (Visual Effects Supervisor), Norman Howell (Stunt Coordinator), Jonathan Brown (Camera Operator), Darren Michaels (Still Photographer), Robert Q. Mathews (Costume Supervisor), Emily Ferry (Property Master), James Matheny (Dialogue Editor), Noah Blough (Dialogue Editor), Nerses Gezalyan (Foley Mixer), Jeffrey Wilhoit (Foley Artist), Gary A. Hecker (Foley Artist), Jeffrey R. Payne (Foley Editor), Lawrence L. Commans (Boom Operator), Cliff Latimer (ADR Supervisor), Scott A. Tinsley (Foley Editor) and others.