Michael Caine as Sidney Bruhl

Christopher Reeve as Clifford Anderson

Dyan Cannon as Myra Bruhl

Irene Worth as Helga ten Dorp

Henry Jones as Porter Milgrim

Joe Silver as Seymour Starger

Tony DiBenedetto as Burt - the Bartender

Al LeBreton as Handsome Actor

Francis B. Creamer Jr. as The Minister

Stewart Klein as Stewart Klein

Jeffrey Lyons as Jeffrey Lyons

Joel Siegel as Joel Siegel

Jenny Lumet as Stage Newsboy

Jayne Heller as Stage Actress

George Peck as Stage Actor

Perry Rosen as Stage Actor

Jon-Erik Hexum as Theater Audience (uncredited)