Jack Lemmon

Mel Edison

Anne Bancroft

Edna Edison

Gene Saks

Harry Edison

Elizabeth Wilson

Pauline

Florence Stanley

Pearl

Maxine Stuart

Belle

Ed Peck

Man Upstairs

Gene Blakely

Charlie

Ivor Francis

Psychiatrist

Stack Pierce

Detective

Patricia Marshall

Woman Upstairs

Dee Carroll

Helen

Ketty Lester

Unemployment Clerk

M. Emmet Walsh

Doorman

F. Murray Abraham

Taxi Driver

James McCallion

Mr. Cooperman

Fat Thomas

Bus Driver

Arlen Stuart

Elevator Passenger

Sylvester Stallone

Youth in Park

Alan DeWitt

Wayne Morgan

Harry Ray

Man with Dog

Lonnie Burr

Man on Street (uncredited)

Eddie Garrett

Elevator Passenger (uncredited)

Ben Lautman

NYU Student (uncredited)

Dave Michaels

Radio Newscaster (voice) (uncredited)

Gary Owens

Radio Newscaster (voice) (uncredited)

John Ritter

Elevator Passenger (uncredited)

Cosmo Sardo

Subway Passenger (uncredited)

Norman Stevans

Elevator Passenger (uncredited)

Joe Turkel

Man Upstairs (voice) (uncredited)