Josh Hartnett as Slevin

Morgan Freeman as The Boss

Ben Kingsley as The Rabbi

Lucy Liu as Lindsey

Bruce Willis as Mr. Goodkat

Stanley Tucci as Det. Brikowski

Mykelti Williamson as Sloe

Peter Outerbridge as Dumbrowski

Michael Rubenfeld as Yitzchok

Kevin Chamberlin as Marty

Dorian Missick as Elvis

Scott Gibson as Max

Corey Stoll as Saul

Robert Forster as Murphy

Sam Jaeger as Nick Fisher

Danny Aiello as Roth

Jennifer Miller as Slevin's Girlfriend

Janet Lane as Gloria (Blondie)

Oliver Davis as Henry

Sebastien Roberts as The Guy

Darren Marsman as Slim Hopkins

Gerry Mendicino as Benny Begin

Matthew G. Taylor as Featured (uncredited)

Shira Leigh as Hottie

Daniel Kash as Bodyguard #1

Dmitry Chepovetsky as Bodyguard #2