 | John Hutton als Claude Shannon |
 | Judith Ivey als Betty Shannon |
 | Kaliswa Brewster als Michelle |
| Andrew Pastides als Claude Shannon (young man) |
| Olivia Gilliatt als Norma Levor |
| V.J. Scarpaci als Claude Shannon (boy) |
| Toleeya Napolitano als Young girl neighbor |
 | Adam Heller als Psychoanalyst |
| Cleve Asbury als Bell Labs Engineer |
| Mark Lyons als Bell Labs Engineer |
 | Randall McNeal als Bell Labs Engineer |
| Andrew Patrick Nelson als Bell Labs Engineer |
 | Michael Rose als Bell Labs Engineer |
| Remi Sandri als Bell Labs Engineer |
 | Geoff Schuppert als Bell Labs Engineer |
 | Jack Sochet als Bell Labs Engineer |
| Kurt Ziskie als Bell Labs Engineer |
 | Gloria Mann als Bell Labs Secretary |
 | Sandy York als Bell Labs Secretary |
 | James Rutledge als IAS Mathematician |
| Blake Ashman-Kipervaser | Line Producer |
| Michael Bowes | Line Producer |
| Michelle Effros | Executive Producer |
| Christina Fragouli | Executive Producer |
| Mark Levinson | Producer |
| Quentin Little | Line Producer |
| Alon Orlitsky | Executive Producer |
| Ruediger Urbanke | Executive Producer |
| Sergio Verdú | Creative Producer |
| Robert Miller | Music |
| Claudia Raschke | Cinematography |
| Tim Sternberg | Editor |
| Yuko Sorbin | Production Design |
| Jeremy Woodward | Production Design |
| Sarah Hill Richmond | Costume Design |
| Jennifer Lynn Tremblay | Costume Design |
| Sarah Francavilla | Key Hair Stylist |
| Trish Seeney | Makeup Artist |
| Diana Sikes | Hairstylist |
| Brittney Ward | Additional Hairstylist |
| Amenya Makuku | Production Manager |
| Vlad Minuty | First Assistant Director |
| Tristan Baylis | Mixing Engineer |
| Steve Bores | Sound Mixer |
| David Forshee | Sound Effects Editor |
| Nathan Hasz | Foley Recording Engineer |
| Mark Maloof | Sound Mixer |
| Sanghee Moon | Sound Effects |
| Esther Regelson | Dialogue Editor |
| Gerta Xhelo | Animation |
| Kirill Yeretsky | Animation Director |
| Woody Bell | Key Grip |
| Jason Bowen | Swing |
| Jimmy Candelejo | Grip |
| Jesse Goldberg | Gaffer |
| Christian J. Hollyer | First Assistant Camera |
| Alan Hostetter | Gaffer |
| Wayne McElroy | Second Assistant Camera |
| David Ranghelli | Key Grip |
| Igeoma Simon | Swing |
| Gerta Xhelo | Visual Effects |
| Kirill Yeretsky | Visual Effects Director |
| Kerry Hassler | Wardrobe Supervisor |
| Jason Cacioppo | Online Editor |
| Charles Herzfeld | Post Production Supervisor |
| Mark Levinson | Additional Editor |
| Nick Green | Music Supervision Assistant |
| Jenna Dayton | Script Supervisor |
| Omar Deleon | Production Assistant |
| Bradley Grenon | Production Assistant |
| Raul Martinez | Production Assistant |
| Rita Raider | Production Assistant |
| Rosemary Rotondi | Archival Footage Research |
| Sarah Rummel | Production Assistant |
| Lauren Vanderschuur | Production Assistant |
| Mark Levinson | Director |
| Woody Bell | Key Grip |
| Chelsea Paige | Hair Department Head |
| Amanda Miller | Wigmaker |
