Robert De Niro

Character: Rupert Pupkin

Jerry Lewis

Character: Jerry Langford

Diahnne Abbott

Character: Rita

Sandra Bernhard

Character: Masha

Shelley Hack

Character: Cathy Long

Frederick de Cordova

Character: Bert Thomas

Ed Herlihy

Character: Ed Herlihy

Lou Brown

Character: Band Leader

Loretta Tupper

Character: Stage Door Fan

Peter Potulski

Character: Stage Door Fan

Vinnie Gonzales

Character: Stage Door Fan

Whitey Ryan

Character: Stage Door Guard

Doc Lawless

Character: Chauffeur

Marta Heflin

Character: Young Girl

Katherine Wallach

Character: Autograph Seeker

Charles Kaleina

Character: Autograph Seeker

Richard Baratz

Character: Caricaturist

Catherine Scorsese

Character: Rupert's Mom (voice)

Cathy Scorsese

Character: Dolores

Chuck Low

Character: Man in Chinese Restaurant

Liza Minnelli

Character: Liza Minnelli

Leslie Levinson

Character: Roberta Posner

Alan Potashnick

Character: Man at Telephone

Michael Kolba

Character: Man at Telephone

Robert Colston

Character: Man at Telephone

Ramon Rodriguez

Character: Man at Telephone

Chuck Coop

Character: Man at Telephone

Sel Vitella

Character: Man at Telephone

Margo Winkler

Character: Receptionist

Tony Boschetti

Character: Mr. Gangemi

Mick Jones

Character: Street Scum

Joe Strummer

Character: Street Scum

Paul Simonon

Character: Street Scum

Kosmo Vinyl

Character: Street Scum

Ellen Foley

Character: Street Scum

Pearl Harbour

Character: Street Scum

Gaby Salter

Character: Street Scum

Jerry Baxter-Worman

Character: Street Scum

Don Letts

Character: Street Scum

Matt Russo

Character: Cabbie

Thelma Lee

Character: Woman in Telephone Booth

Joyce Brothers

Character: Dr. Joyce Brothers

George Kapp

Character: Mystery Guest

Victor Borge

Character: Victor Borge

Ralph Monaco

Character: Raymond Wirtz

Rob-Jamere Wess

Character: Security Guard

Kim Chan

Character: Jonno

Audrey Dummett

Character: Cook

June Prud'Homme

Character: Audrey

Edgar J. Scherick

Character: Wilson Crockett

Thomas M. Tolan

Character: Gerrity

Ray Dittrich

Character: Giardello

Richard Dioguardi

Character: Captain Burke

Jay Julien

Character: Langford's Lawyer

Harry J. Ufland

Character: Langford's Agent

Scotty Bloch

Character: Crockett's Secretary

Jim Lyness

Character: Ticket Taker

Bill Minkin

Character: McCabe

Diane Rachell

Character: McCabe's Wife

Dennis Mulligan

Character: Plainclothesman

Tony Devon

Character: Plainclothesman

Peter Fain

Character: Plainclothesman

Michael F. Stodden

Character: Plainclothesman

Gerard Murphy

Character: Plainclothesman

Jimmy Raitt

Character: Stage Manager

Martin Scorsese

Character: TV Director

Tony Randall

Character: Tony Randall

Charles Scorsese

Character: First Man at Bar

Mardik Martin

Character: Second Man at Bar

William Jorgensen

Character: Newsman (voice)

Marvin Scott

Character: Newsman (voice)

Chuck Stevens

Character: Newsman (voice)

William Littauer

Character: Newsman (voice)

Jeff David

Character: Announcer (voice)

Mary Elizabeth Mastrantonio

Character: Crowd Extra (uncredited)