- Joe Alwyn Billy Lynn
- Kristen Stewart Kathryn Lynn
- Chris Tucker Albert
- Garrett Hedlund Dime
- Vin Diesel Shroom
- Steve Martin Norm Oglesby
- Deirdre Lovejoy Denise Lynn, madre de Billy
- Tim Blake Nelson Wayne
- Ben Platt Josh
- Mason Lee Foo
- Beau Knapp Crack
- Ismael Cruz Cordova Holliday
- Cooper Andrews Grateful / Anxious American
- Arturo Castro Mango