Kevin Costner

Eliot Ness

Sean Connery

Jim Malone

Robert De Niro

Al Capone

Charles Martin Smith

Oscar Wallace

Andy Garcia

George Stone

Richard Bradford

Mike

Jack Kehoe

Payne

Brad Sullivan

George

Billy Drago

Nitti

Patricia Clarkson

Catherine Ness

Vito D'Ambrosio

Bowtie Driver

Steven Goldstein

Scoop

Peter Aylward

Lt. Anderson

Don Harvey

Preseuski

Robert Swan

Mountie Captain

John J. Walsh

Bartender

Del Close

Alderman

Colleen Bade

Mrs. Blackmer

Greg Noonan

Rangemaster

Sean Grennan

Cop Cousin

Larry Viverito Sr.

Italian Waiter

Kevin Michael Doyle

Williamson

Mike Bacarella

Overcoat Hood

Michael P. Byrne

Ness' Clerk

Kaitlin Montgomery

Ness' Daughter

Aditra Kohl

Blackmer Girl

Charles Keller Watson

Reporter

Larry Brandenburg

Reporter

Chelcie Ross

Reporter

Tim Gamble

Reporter

Pat Billingsley

Bailif

Sam Smiley

Bailiff

John Bracci

Fat Man

Jennifer Anglin

Woman in Elevator

Eddie Minasian

Butler

Anthony Mockus Sr.

Judge

Will Zahrn

Defense Attorney

Louie Lanciloti

Barber

Vince Viverito

Bodyguard

Valentino Cimo

Bodyguard

Joe Greco

Bodyguard

Clem Caserta

Bodyguard

Robert Miranda

Gunned Head

John Barrowman

Street Person (uncredited)

Stephen Burrows

Hoodlum (uncredited)

Justin De Rosa

Capone's Hitman (uncredited)

Eddy Donno

Capone's Hitman (uncredited)

Jack Fitzstephens

Train Announcer (uncredited)

Collin Hymes

Baby in Carriage (uncredited)

Clifton James

District Attorney (uncredited)

Matt Johnston

Union Station Bodyguard (uncredited)

Robert Minkoff

Man (uncredited)