Kevin Costner

Eliot Ness

Sean Connery

Jim Malone

Robert De Niro

Al Capone

Charles Martin Smith

Oscar Wallace

Andy García

George Stone

Richard Bradford

Mike

Jack Kehoe

Payne

Brad Sullivan

George

Billy Drago

Nitti

Patricia Clarkson

Ness' Wife

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