| Kevin Costner | Eliot Ness |
| Sean Connery | Jim Malone |
| Charles Martin Smith | Agent Oscar Wallace |
| Andy Garcia | Agent George Stone/Giuseppe Petri |
| Robert De Niro | Al Capone |
| Richard Bradford | Police Chief Mike Dorsett |
| Jack Kehoe | Walter Payne |
| Brad Sullivan | George |
| Billy Drago | Frank Nitti |
| Patricia Clarkson | Catherine Ness |
| Director | Brian De Palma |
| Writer | Oscar Fraley; Eliot Ness; David Mamet |
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