 | Jared Leto als Mark David Chapman |
 | Lindsay Lohan als Nancy Pitman |
 | Judah Friedlander als Paul |
 | Ursula Abbott als Jeri |
 | Mark Lindsay Chapman als John Lennon |
 | Mariko Takai als Yoko Ono |
 | Michael Sirow als Joseph |
 | Kate Higgins als Gloria |
| Jeane Fournier als Prostitute |
 | Brian O'Neill als Patrick |
 | Jaime Tirelli als Jose |
| Roy Milton Davis als Homeless Man |
 | Chuck Cooper als Cabbie |
 | Le Clanché du Rand als Helen |
| Dan Schultz als Steve |
| Amanda Mackey | Casting |
| Cathy Sandrich Gelfond | Casting |
| Robert Salerno | Producer |
| Sig De Miguel | Casting |
| Brad Wyman | Producer |
| Tom Richmond | Director of Photography |
| Jared Leto | Executive Producer |
| Lucy Sustar | Foley Mixer |
| Kalina Ivanov | Production Design |
| Gary Howsam | Executive Producer |
| Anthony Marinelli | Original Music Composer |
| Ane Crabtree | Costume Design |
| Michael Simmonds | Second Unit Director of Photography |
| Andrew Hafitz | Editor |
| Thomas Fatone | First Assistant Director |
| Lewin Webb | Executive Producer |
| John Flock | Executive Producer |
| Alexandra Milchan | Producer |
| Naomi Despres | Producer |
| Colleen Callaghan | Key Hair Stylist |
| Gary Gegan | Sound Re-Recording Mixer |
| Brian Bell | Line Producer |
| Bergen Swanson | Unit Production Manager |
| Jarrett Schaefer | Director |
| Jarrett Schaefer | Writer |
| David Lee Fein | Foley Artist |
| Alan Freedman | ADR Mixer |
| Maya Hardinge | Makeup Department Head |
| Jim Makiej | Editor |
| Evelyne Noraz | Makeup Artist |
| Lawrence Loewinger | Sound Mixer |
| Matthew Iadarola | Sound Re-Recording Mixer |
| Gregg Barbanell | Foley Artist |
| Eric Raber | Sound Effects Editor |
| Kirsten Kearse | Script Supervisor |
| Julie Pearce | Music Editor |
| Richard Hebrank | Construction Coordinator |
| Shawn Greene | Gaffer |
| Tim Pedegana | Post Production Supervisor |
| Joseph Proscia | Leadman |
| Charlotte Fleck | Dialect Coach |
| Robert Getty | Supervising Sound Editor |
| Alec St. John | Supervising Sound Editor |
| Jonathan Coomes | Foley Editor |
| Nina Kuhn | Best Boy Electric |
| Todd Tucker | Prosthetic Makeup Artist |
| Tracy McKnight | Music Supervisor |
| Robert Zorella | Art Department Coordinator |
| Rick Chad | Executive Producer |
| JoJo Whilden | Still Photographer |
| Amanda Carroll | Set Decoration |
| Derek Yip | Production Accountant |
| Danielle Blumstein | Production Coordinator |
| Gilbert Alloul | Executive Producer |
| Michael Fennimore | Transportation Captain |
| Kate Bulpitt | Casting Associate |
| Randall Richards | Art Direction |
| David Jobe | Foley Mixer |
| Amy Pickering | Key Costumer |
| Bryant Musgrove | Boom Operator |
| Patrick D. Gibbons | Second Assistant Director |
| Bobby Johanson | ADR Engineer |
| Jack Jones | Book |
| Jason Rody | Second Assistant Director |
| Chris Ann Pappas | Assistant Costume Designer |
| Rafael Lima | Assistant Location Manager |
| Chris Marsh | Location Manager |
| Jeffrey Lazar | First Assistant Director |
| Dominick Cocuzzo | Construction Grip |
| Danielle Fiorello | Dialogue Editor |
| Kris Chevannes | ADR Recordist |
