Jesse Eisenberg

Ralphie

Adrien Brody

Dan

Odessa Young

Sal

Philip Ettinger

Jason

Sallieu Sesay

Ahmet

Evan Jonigkeit

Son Brad

Caleb Eberhardt

Son Aaron

Ethan Suplee

Dad Leo

Lamar Johnson

Garfield

Gheorghe Mureșan

Sachiel

Brian Anthony Wilson

Zander

Sean Edward Lewis

Son Cy

Brian Brehm

Son Drew

Blake Brehm

Son Paul

Adam Wade McLaughlin

Jerome

Matthew Lamb

Raymond

Rheta West

Tammy

Jonah Wharton

Connor

Garrett Richmond

Blake

Zia Anger

Alice

Jack Jones

Young Ralphie

Ben Smith-Petersen

Officer Michael

Mike Alamo

Pawn Shop Owner

Sheila Trasente

Waitress

Barbara Ackerman

Cashier

Mohamed Williams

Ahmet's Buddy

Martha Stansberry

Maternity Nurse

Charles Haislah

Grocery Store Clerk

Emma Galvin

Teenage Girl

Jocelyn Williams

Serenity House Nurse

Sonny Ciarlillo

Santa

Riley Keough

Mother (uncredited)