Josh Brolin as John O'Mara

Ryan Gosling as Sgt. Jerry Wooters

Sean Penn as Mickey Cohen

Nick Nolte as Bill Parker

Emma Stone as Grace Faraday

Anthony Mackie as Coleman Harris

Giovanni Ribisi as Conway Keeler

Robert Patrick as Max Kennard

Michael Peña as Navidad Ramirez

Mireille Enos as Connie O'Mara

Troy Garity as Wrevock

Holt McCallany as Karl Lockwood

Sullivan Stapleton as Jack Whalen

James Carpinello as Johnny Stomp

James Landry Hébert as Mitch Racine

Evan Jones as Neddy Herbert

Josh Pence as Darryl Gates

John Aylward as Judge Carter

Jack Conley as Sheriff Biscailuz

Jack McGee as Lt. Quincannon

Jon Polito as Dragna

Austin Abrams as Pete

Michael Bacall as Comanche

Lance Barber as Comanche

Scott Beehner as Club Figaro Reporter

Mick Betancourt as Detective Sgt. Will Hendricks

De'Aundre Bonds as Duke Del-Red

Mac Brandt as Bruiser

Ambyr Childers as Milk Skinned Blonde

Dennis Cockrum as Elmer Jackson

Maxwell Perry Cotton as Keeler's Son

Jonny Coyne as Grimes

Max Daniels as Jeffrey Clark

Lucy Davenport as Slapsy Maxie's Singer

Darrell Davis as Officer Wyler

Anthony De Longis as Burbank Jail Thug

Christopher Doyle as Edgar Beaumont

David Fleischer as City Hall Reporter

Lucas Fleischer as Club Figaro Reporter

Mickey Giacomazzi as Hatchetman

Dale Gibson as Burbank Cop

Derek Graf as El Dorado Guard

Tom Hallick as El Dorado Investor

Don Harvey as Officer Funston

Austin Highsmith Garces as Patty

Matt Knudsen as Club Figaro Reporter

Anne Leighton as Crying Woman

Neil Koppel as Max Solomon

Michael C. Mahon as Citz Hall Reporter

Rick Marcus as Burbank Cop

Derek Mears as Bridge Goon

Cazimir Milostan as Desk Officer

Brandon Molale as Jimmy 'Bockscar' Knox

Anthony Molinari as Lorenzo Molinari

Michael Owen as Burbank Jail Thug

Riel Paley as City Hall Reporter

Michael Papajohn as Mike 'The Flea'

Esther Scott as Letty

Haley Strode as Keeler's Wife

Yvette Tucker as Carmen Miranda

Wade Williams as Rourke

Jeff Wolfe as Giovanni Vacarezza

Danny Wynands as Grenade Goon

Eboni 'Chrystal' Adams as Dancer

Nadyla Blakemore as Dancer

Mandy Coulton as Dancer

Michelle Current as Dancer

Tiffany Daniels as Dancer

Monifa Ellis as Dancer

Hilary Fleming as Dancer

Scott Fowler as Dancer

Melanie Gage as Dancer

Asiel Hardison as Dancer

Michael Higgins as Dancer

Scott Hislop as Dancer

Jermaine Johnson as Dancer

Eva La Dare as Dancer

Stephanie Landwehr as Dancer

Tina Mayer as Dancer

Marcy McCusker as Dancer

Jacoby Mosby as Dancer

Chris Moss as Dancer

Jared Murillo as Dancer

Alycia M. Perrin as Dancer

Henry Chopper Platt as Dancer

Chandrae Roettig as Dancer

Dougie Styles as Dancer

Stephen Sayer as Dancer

Kelleia Sheerin as Dancer

Brett Sturgis as Dancer

Kevin James Sporman as Dancer

April Marie Thomas as Dancer

Forrest Walsh as Dancer

Lizzy Watts as Dancer

Charles Wiggins III as Dancer

Jason Williams as Dancer

Christopher Aber as Reporter (uncredited)

Pamela Adamic as Drugged-Out Girl (uncredited)

Michael Arturo as Dealer (uncredited)

Kojo Asiedu as Bar Patron (uncredited)

Robert T. Barrett as LAPD Cop (uncredited)

Bill Blair as Casino Gambler (uncredited)

Bob Bouchard as Movie Patron (uncredited)

Freedom Bridgewater as Bartender (uncredited)

Matt Callahan as Chinatown Shopper (uncredited)

Greg Cannone as Slapy Maxie's Waiter (uncredited)

Pamela Cedar as Gambler (uncredited)

Michael Jay Copeland as Water pitcher waiter (uncredited)

Eddie Davenport as Goon Gunman (uncredited)

Seth Di Marco as Goon (uncredited)

Isabel Dresden as Hedy Lamarr (uncredited)

Jeremy Dunn as Gangster (uncredited)

Ken Edling as Detective (uncredited)

Chelsea Edmundson as Cigarette Girl (uncredited)

Gray Ellis as Bar Patron (uncredited)

Cathy Fielding as Bookmakers' Secretary (uncredited)

Paige Flannery as Club Patron (uncredited)

Marilyn Foley as Chinatown Shopper (uncredited)

Leni Ford as Rich Widow (uncredited)

Kristin Gagliardi as Slapsy Maxie's Patron (uncredited)

Gill Gard as Slapsy Maxie's Doorman (uncredited)

Nancy Gassner-Clayton as Caroler (uncredited)

Debby Gerber as Plaza Runner (uncredited)

Tanner Gill as Hookey Rothman (uncredited)

Nick Gligor as Slapsy Maxie's Waiter (uncredited)

Sly Green as Club Patron (uncredited)

Louise Griffiths as Screaming Woman (uncredited)

Frank Grillo as Russo (uncredited)

Marie Grujicic-Delage as Fluzzy (uncredited)

Rebecca Hancock as Club Patron (uncredited)

Karen Harper as Caroler (uncredited)

Steve Hernandez as Carmen Miranda Drummer (uncredited)

Rebecca Honett as Cigarette Girl (uncredited)

Todd Honeycutt as Caroler (uncredited)

Courtney Howard as Club Patron (uncredited)

Elizabeth Howell as Lady of the Night (uncredited)

WB Brown II as LAPD (uncredited)

Chris Jackson as Bar Patron (uncredited)

Pat Jankiewicz as Nico (uncredited)

David Johnson as Club Patron (uncredited)

Sergio Kato as Officer Lane (uncredited)

Faye Kelly as Business Woman (uncredited)

Kristen Marie Kelly as Girl at Nightclub (uncredited)

Jess King as Thug (uncredited)

John William King as Casino Cowboy (uncredited)

Olivia Ku as Suzie Wang (uncredited)

Elaine Lockhart as Bar Patron (uncredited)

Amy Mader as Chinatown Shopper (uncredited)

Oscar Magana Jr. as Funeral Mourner (uncredited)

Marlene Manes as Gangster Girl (uncredited)

Nancy McCrumb as Betty Page (uncredited)

Mason McCulley as Caroler (uncredited)

Michael Lee Merrins as #1 Uniformed Officer (uncredited)

Daniel Muller as Club Patron (uncredited)

Kat Munday as Drugged Out Girl #2

Jim J. Mundy as Club Patron (uncredited)

Nino Nava as Pilgrim (uncredited)

Stephane Nicoli as LAPD Officer (uncredited)

Michael Ouellette as Detective (uncredited)

Veronica Parks as Christmas Lady (uncredited)

Don Pecchia as Mob Boss (uncredited)

Geoff Pilkington as Angry Guy in Park (uncredited)

Josh Polizzi as Slapsy Maxie's Waiter (uncredited)

Carolina Provvido as Drugged-Out Girl (uncredited)

Ron Pucillo as Waiter #4 (uncredited)

Robert Ratinoff as Vehicle Driver (uncredited)

Dani Renee as Young Mother (uncredited)

Kara C. Roberts as Slapsy Maxie (uncredited)

Carl Rydlund as Tommy Tedesco (uncredited)

Bradley Sackin as Slapsy Maxie's Motorist (uncredited)

Tony Sagastizado I as Pilgrim (uncredited)

Gregg Sargeant as Gunman 3 (uncredited)

Meg Schaab as O'Malley Sister (uncredited)

Frank Scozzari as Mickey's Thug #1 (uncredited)

Robert Sisko as Slapsy Maxie's Waiter (uncredited)

Lauren K. Solomon as Casino Maid Marion (uncredited)

Scott St. Blaze as Slapsy Maxie's Waiter (uncredited)

Kate Stewart as Waitress (uncredited)

Nevan Stewart as Club Patron (uncredited)

Erica Stikeleather as Beautiful Woman (uncredited)

Tom Strahle as Slapsy Maxie's Guitarist (uncredited)

Sophia Strauss as Little Girl (uncredited)

Jennifer Thompson as Cigarette Girl (uncredited)

Levi Tinker as Grauman's Chinese Theater Patron (uncredited)

Christopher Tisa as Valet (uncredited)

John H. Tobin as Actor (uncredited)

Chris Toma as Club Patron (uncredited)

Alexis Toone as Tart (uncredited)

Amber Sharae Topsy as Sexy Woman (uncredited)

Lucy Walsh as Manicurist (uncredited)

Elyse Willis as Caroler (uncredited)

Kevin Young as Burn Victim (uncredited)

Melissa Anne Young as Beautiful Woman (uncredited)