Robert De Niro as David 'Noodles' Aaronson

James Woods as Maximilian 'Max' Bercovicz

Elizabeth McGovern as Deborah Gelly

Treat Williams as James Conway O'Donnell

Tuesday Weld as Carol

Joe Pesci as Frankie Monaldi

Burt Young as Joe

James Hayden as Patrick 'Patsy' Goldberg

William Forsythe as Philip 'Cockeye' Stein

Larry Rapp as 'Fat' Moe Gelly

Amy Ryder as Peggy

Scott Schutzman Tiler as Young Noodles

Rusty Jacobs as Young Max / David Bailey

Jennifer Connelly as Young Deborah

Brian Bloom as Young Patsy

Adrian Curran as Young Cockeye

Mike Monetti as Young 'Fat' Moe Gelly

Noah Moazezi as Dominic

James Russo as Bugsy

Darlanne Fluegel as Eve

Danny Aiello as Police Chief Vincent Aiello

Richard Bright as Chicken Joe

Frank Gio as Beefy

Ray Dittrich as Trigger

Mario Brega as Mandy

Julie Cohen as Young Peggy

Richard Foronjy as Officer Whitey

Olga Karlatos as Woman in the Puppet Theatre

Clem Caserta as Al Capuano

Frank Sisto as Fred Capuano

Jerry Strivelli as Johnny Capuano

Mike Gendel as Irving Gold

Sandra Solberg as Friend of Young Deborah

Margherita Pace as Young Deborah (Double)

Paul Herman as Monkey

Bruno Iannone as Thug

Bruno Bilotta as Chinese Theater Spectator (uncredited)

Angelo Florio as Willie the Ape

Marcia Jean Kurtz as Max's Mother

Gerard Murphy as Crowning

Dutch Miller as Van Linden

Robert Harper as Sharkey

Karen Shallo as Mrs. Aiello

Frankie Caserta as Bugsy's Gang

Joey Marzella as Bugsy's Gang

Marvin Scott as Interviewer

Ann Neville as Girl in Coffin

Joey Faye as Adorable Old Man

Linda Ipanema as Nurse Thompson

Tandy Cronyn as Reporter 1

Richard Zobel as Reporter 2

Baxter Harris as Reporter 3

Arnon Milchan as Chauffeur

Marty Licata as Cemetery Caretaker

Estelle Harris as Peggy's Mother

Gerritt Debeer as Drunk

Alexander Godfrey as Newstand Man

Cliff Cudney as Mounted Policeman

Paul Farentino as 2nd Mounted Policeman

Bruce Bahrenburg as Sgt. P. Halloran

Mort Freeman as Street Singer

Massimo Liti as Young Macrò

Jay Zeely as Foreman

Salvatore Billa as One of Beefy's Thugs (uncredited)

Scott Coffey as Bugsy's Gang (uncredited)

Marco Stefanelli as Bugsy's Gang (uncredited)

Matteo Cafiso as Boy in Park (uncredited)

Nunzio Giuliani as Speakeasy Drum Player (uncredited)

Nelson Camp as Newspaper Salesman (uncredited)

Dario Iori as Speakeasy Banjo Player (uncredited)

Ole Jorgensen as Speakeasy Percussionist (uncredited)

Francesca Leone as David Bailey's Girlfriend (uncredited)

Chuck Low as Deborah Gelly's Father (uncredited)

Ron Nummi as Waiter (uncredited)

Ryan Paris as Speakeasy Patron (uncredited)

Nicola Roberto as Speakeasy Trumpet Player (uncredited)

Gianni Sanjust as Speakeasy Clarinet Player (uncredited)

Alex Serra as Speakeasy Vocalist (uncredited)

Susan Spafford as Nurse (uncredited)

Mark Frazer as Pimp (uncredited)

Maria Pia Monicelli as Prostitute (uncredited)

Claudio Mancini as Syndacalist (uncredited)

Rossana Canghiari as Speakeasy Patron (uncredited)