Steve Buscemi

Enoch 'Nucky' Thompson

Kelly Macdonald

Margaret Thompson, Margaret Schroeder

Michael Shannon

Nelson Van Alden

Shea Whigham

Elias 'Eli' Thompson

Stephen Graham

Al Capone

Vincent Piazza

Lucky Luciano

Michael Kenneth Williams

Chalky White

Paul Sparks

Mickey Doyle

Gretchen Mol

Gillian Darmody

Michael Stuhlbarg

Arnold Rothstein

Anthony Laciura

Eddie Kessler

Jack Huston

Richard Harrow

Anatol Yusef

Meyer Lansky

Brady Noon

Tommy Darmody

Connor Noon

Tommy Darmody

Lucy Gallina

Emily Schroeder

Josie Gallina

Emily Schroeder

Declan McTigue

Teddy Schroeder, Teddy Thompson