Ben Campbell is a young, highly intelligent student at M.I.T. who strives to succeed. Wanting a scholarship to transfer to Harvard School of Medicine to become a doctor, Ben learns that he cannot afford the $300,000 tuition as he comes from a poor, working-class background. But one evening, Ben is introduced by his unorthodox math professor to a small but secretive club of five students, Jill, Choi, Kianna, and Fisher, who are being trained by Professor Rosa to count cards at blackjack.
Unfortunately the movie 21 is not yet available on HBO Max.
| Camera | Russell Carpenter | Director of Photography |
| Costume & Make-Up | Luca Mosca | Costume Design |
| Writing | Peter Steinfeld | Screenplay |
| Editing | Elliot Graham | Editor |
| Directing | Robert Luketic | Director |
| Writing | Ben Mezrich | Novel |
| Art | Missy Stewart | Production Design |
| Production | Michael De Luca | Producer |
| Writing | Allan Loeb | Screenplay |
| Production | Dana Brunetti | Producer |
| Production | Francine Maisler | Casting |
| Production | Brett Ratner | Executive Producer |
| Production | William S. Beasley | Executive Producer |
| Production | Ryan Kavanaugh | Executive Producer |
| Crew | Susan Garfield | Stand In |
| Crew | Billy D. Lucas | Stunts |
| Directing | Justin Muller | First Assistant Director |
| Directing | John M. Morse | Second Assistant Director |
| Production | Sharyn Shimada-Huggins | Production Supervisor |
| Directing | Wilma Garscadden-Gahret | Script Supervisor |
| Camera | Will Arnot | Steadicam Operator |
| Costume & Make-Up | Caroline Errington | Costume Supervisor |
| Production | William S. Beasley | Unit Production Manager |
| Art | David Gulick | Property Master |
| Camera | Erik L. Brown | First Assistant "A" Camera |
| Production | Bryan Thomas | Unit Production Manager |
| Costume & Make-Up | Taryn Walsh | Key Costumer |
| Costume & Make-Up | Andrew Poleszak | Assistant Costume Designer |
| Art | Tracey A. Doyle | Set Decoration |
| Camera | David E. Diano | "A" Camera Operator |
| Camera | Will Arnot | "B" Camera Operator |
| Camera | Patrick Quinn | First Assistant "B" Camera |
| Camera | Eric Swanek | First Assistant "B" Camera |
| Costume & Make-Up | Elizabeth Cecchini | Key Hair Stylist |
| Costume & Make-Up | Laurie Bramhall | Costumer |
| Production | Mark Fitzgerald | Assistant Location Manager |
| Production | Anne C. Ford | Production Accountant |
| Art | Theodore Suchecki | Construction Foreman |
| Art | E. David Cosier | Set Designer |
| Art | George Lee | Set Designer |
| Camera | Tony Campenni | Dolly Grip |
| Art | Janine Moore | Art Department Coordinator |
| Art | Mick Reinman | Storyboard Artist |
| Costume & Make-Up | Marleen Alter | Makeup Artist |
| Sound | Nelson Stoll | Production Sound Mixer |
| Production | Shari LaFranchi Blakney | Production Coordinator |
| Art | Joseph Kearney | Construction Coordinator |
| Costume & Make-Up | Parrish Kennington | Costumer |
| Costume & Make-Up | Lucia Mace | Hair Department Head |
| Art | Eric Bryant | Assistant Art Director |
| Directing | Scott Rorie | Second Second Assistant Director |
| Crew | Bryce Shields | Video Assist Operator |
| Crew | Cid Swank | Unit Publicist |
| Editing | Liza D. Espinas | First Assistant Editor |
| Sound | Mark Gordon | Dialogue Editor |
| Camera | Thomas Doran | Dolly Grip |
| Sound | Brian Copenhagen | Boom Operator |
| Costume & Make-Up | Tania McComas | Makeup Department Head |
| Sound | Brad Brock | Foley Mixer |
| Lighting | Scott D. Davis | Rigging Gaffer |
| Sound | Michael J. Broomberg | Foley Artist |
| Costume & Make-Up | Trish Seeney | Key Makeup Artist |
| Lighting | Len Levine | Gaffer |
| Art | Paul Richards | Leadman |
| Camera | Peter Iovino | Still Photographer |
| Sound | Howard London | ADR Mixer |
| Costume & Make-Up | Johanna Argan | Costumer |
| Lighting | Carlos Bermudez | Best Boy Electric |
| Camera | Philip Sloan | Key Grip |
| Production | Luke Poling | Assistant Production Coordinator |
| Art | Mick Cukurs | Set Designer |
| Art | Jennifer Gerbino | Assistant Property Master |
| Production | Elizabeth Chodar | Casting Assistant |
| Sound | Bob Bowman | Assistant Sound Editor |
| Costume & Make-Up | Vanessa Knoll | Costumer |
| Production | Charles Harrington | Location Manager |
| Art | Mark Vena | Storyboard Artist |
| Crew | Tracy R. Spiegel | Craft Service |
| Sound | David Sardy | Music Supervisor |
| Sound | Michael D. Wilhoit | Supervising Sound Editor |
| Sound | Jessica Gallavan | ADR Editor |
| Sound | Kerry Ann Carmean | Foley Editor |
| Sound | Scott Wolf | Sound Designer |
| Sound | Bob Newlan | Dialogue Editor |
| Editing | Stephen Nakamura | Digital Colorist |
| Sound | Gary A. Hecker | Foley Artist |
| Editing | Mark Hartzell | Assistant Editor |
| Sound | Greg Orloff | Sound Re-Recording Mixer |
| Editing | Mo Henry | Negative Cutter |
| Sound | Gary C. Bourgeois | Sound Re-Recording Mixer |
| Visual Effects | Ashley Clark | Visual Effects Producer |
| Crew | Mic Rodgers | Stunts |
| Crew | Danny Wynands | Stunts |
| Crew | Casey O'Neill | Stunt Double |
| Crew | Freddie Hice | Stunt Coordinator |
| Art | James F. Truesdale | Art Direction |
| Crew | John Ruggieri | Special Effects Coordinator |
| Visual Effects | Gray Marshall | Visual Effects Supervisor |
| Sound | Wade Wilson | Sound Effects Editor |
| Sound | Carlton Kaller | Music Editor |
| Crew | Jeffrey J. Dashnaw | Stunts |
| Sound | Laura Harris Atkinson | Dialogue Editor |
| Sound | David Sardy | Original Music Composer |
