The King of Comedy

Robert De Niro

Rupert Pupkin

Jerry Lewis

Jerry Langford

Diahnne Abbott

Rita

Sandra Bernhard

Masha

Shelley Hack

Cathy Long

Frederick de Cordova

Bert Thomas

Ed Herlihy

Ed Herlihy

Lou Brown

Band Leader

Loretta Tupper

Stage Door Fan

Peter Potulski

Stage Door Fan

Vinnie Gonzales

Stage Door Fan

Whitey Ryan

Stage Door Guard

Doc Lawless

Chauffeur

Marta Heflin

Young Girl

Katherine Wallach

Autograph Seeker

Charles Kaleina

Autograph Seeker

Richard Baratz

Caricaturist

Catherine Scorsese

Rupert's Mom (voice)

Cathy Scorsese

Dolores

Chuck Low

Man in Chinese Restaurant