 | Joseph Gordon-Levitt als Ethan |
 | Seth Rogen als Isaac |
 | Anthony Mackie als Chris |
 | Lizzy Caplan als Diana |
 | Jillian Bell als Betsy |
 | Mindy Kaling als Sarah |
 | Michael Shannon als Mr. Green |
 | Lorraine Toussaint als Mrs. Roberts |
 | Randall Park als Boss |
 | Ilana Glazer als Rebecca Grinch |
 | Nathan Fielder als Joshua |
 | Heléne Yorke als Cindy |
 | Aaron Hill als Tommy Owens |
 | Tracy Morgan als Narrator / Santa |
 | Darrie Lawrence als Nana |
 | James Franco als Self |
 | Miley Cyrus als Self |
 | Kamal Angelo Bolden als Kamal |
 | Baron Davis als Self |
| Chuck Muckle als Piano Playing Uncle |
| Curt Bouril als Cindy's Husband |
 | Brooke Liddell als Cindy's Daugher |
 | Kiley Liddell als Cindy's Daughter |
 | Jason Mantzoukas als Bad Santa #1 |
 | Jason Jones als Bad Santa #2 |
 | Clem Cheung als Deli Owner |
| Harolyn Blackwell als Opera Singer |
 | Natalie Knepp als Coat Check Girl |
| Cameron Earl Thrift als Singing Kid |
| Jeremy Vimes als Hunan Waiter |
| Gabriel Long als Karaoke Singer #1 |
 | Michaela Sprague als Isaac's Daughter |
 | Euan Morton als Coat Check Patron |
| Marilyn O'Connell als Old Lady |
| Richard Hughes als Train Conductor |
 | Theodora Miranne als Woman |
 | Nicola Fiore als Exotic Dancer (uncredited) |
 | Aly Mang als Party Attendee & Pro Athlete Girlfriend (uncredited) |
| Marija Skangale als Snow Globe Dancer (uncredited) |
 | Bill Walters als Christmas Bartender (uncredited) |
 | Hannah Townsend als Tommy's Hot Girl (uncredited) |
| Kyle Hunter | Executive Producer |
| Seth Rogen | Producer |
| Jonathan Levine | Director |
| Evan Goldberg | Producer |
| Barbara A. Hall | Executive Producer |
| Nathan Kahane | Executive Producer |
| Shaun Burke | Associate Producer |
| Joseph Drake | Executive Producer |
| Evan Goldberg | Screenplay |
| Kyle Hunter | Screenplay |
| Jonathan Levine | Screenplay |
| Ariel Shaffir | Screenplay |
| Ray Fisher | Leadman |
| Michael Flynn | Line Producer |
| James Weaver | Producer |
| Ariel Shaffir | Executive Producer |
| Sasha Paracels | Associate Producer |
| Ben Waisbren | Executive Producer |
| Alex McAtee | Associate Producer |
| Zene Baker | Editor |
| Brandon Trost | Director of Photography |
| Marco Beltrami | Music |
| Miles Hankins | Music |
| Jonathan Levine | Story |
| Annie Spitz | Production Design |
| Melissa Toth | Costume Design |
| Gabe Hilfer | Music Supervisor |
| Paul Linden | Visual Effects Supervisor |
| Spencer Wong | Co-Producer |
| Francine Maisler | Casting |
| Kathy Driscoll-Mohler | Casting |
| Barbara A. Hall | Unit Production Manager |
| Jonathan Watson | First Assistant Director |
| Sandi Greenberg | Second Assistant Director |
| Jeffrey Lee Gibson | Stunt Coordinator |
| Steven Ritzi | Stunt Coordinator |
| Chris Shriver | Art Direction |
| Chryss Hionis | Set Decoration |
| Julia Croon | Script Supervisor |
| Chris Ann Pappas | Assistant Costume Designer |
| Natalie Arango | Costume Supervisor |
| Mindy Hall | Makeup Department Head |
| Ashley Ryan | Makeup Artist |
| Matiki Anoff | Makeup Artist |
| Nathan J. Busch II | Hair Department Head |
| Christof Gebert | Production Sound Mixer |
| Hinju Kim | Assistant Art Director |
| Peter Dorsey | Assistant Art Director |
| Diana Salzburg | Assistant Set Decoration |
| Michael Babcock | Supervising Sound Editor |
| Michael Babcock | Sound Re-Recording Mixer |
| Jeff Campbell | Visual Effects Supervisor |
| Neishaw Ali | Visual Effects Producer |
| J.P. Giamos | Visual Effects Producer |
| Jenna Hellmuth | Stunt Double |
| Shawnna Thibodeau | Stunts |
| Aaron Vexler | Stunts |
