cast
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Joseph Gordon-Levitt
Ethan
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Seth Rogen
Isaac
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Anthony Mackie
Chris
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Lizzy Caplan
Diana
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Jillian Bell
Betsy
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Mindy Kaling
Sarah
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Michael Shannon
Mr. Green
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Lorraine Toussaint
Mrs. Roberts
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Randall Park
Boss
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Ilana Glazer
Rebecca Grinch
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Nathan Fielder
Joshua
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Heléne Yorke
Cindy
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Aaron Hill
Tommy Owens
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Tracy Morgan
Narrator / Santa
- Darrie Lawrence Nana
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James Franco
Self
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Miley Cyrus
Self
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Kamal Angelo Bolden
Kamal
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Baron Davis
Self
- Chuck Muckle Piano Playing Uncle
- Curt Bouril Cindy's Husband
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Brooke Liddell
Cindy's Daugher
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Kiley Liddell
Cindy's Daughter
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Jason Mantzoukas
Bad Santa #1
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Jason Jones
Bad Santa #2
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Clem Cheung
Deli Owner
- Harolyn Blackwell Opera Singer
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Natalie Knepp
Coat Check Girl
- Cameron Earl Thrift Singing Kid
- Jeremy Vimes Hunan Waiter
- Gabriel Long Karaoke Singer #1
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Michaela Sprague
Isaac's Daughter
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Euan Morton
Coat Check Patron
- Marilyn O'Connell Old Lady
- Richard Hughes Train Conductor
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Theodora Miranne
Woman
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Nicola Fiore
Exotic Dancer (uncredited)
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Aly Mang
Party Attendee & Pro Athlete Girlfriend (uncredited)
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Marija Skangale
Snow Globe Dancer (uncredited)
- Bill Walters Christmas Bartender (uncredited)
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Hannah Townsend
Tommy's Hot Girl (uncredited)
- Oliver Solomon Karaoke Singer #1 (uncredited)