Arthur

Dudley Moore

Arthur Bach

Liza Minnelli

Linda Marolla

John Gielgud

Hobson

Geraldine Fitzgerald

Martha Bach

Jill Eikenberry

Susan Johnson

Stephen Elliott

Burt Johnson

Ted Ross

Bitterman

Barney Martin

Ralph Marolla

Thomas Barbour

Stanford Bach

Anne DeSalvo

Gloria

Marjorie Barnes

Hooker

Dillon Evans

Plaza Maitre D'

Maurice Copeland

Uncle Peter

Justine Johnston

Aunt Pearl

Paul Vincent

Plaza Waiter

Mary Alan Hokanson

Secretary

Paul Gleason

Executive

Phyllis Somerville

Saleslady

Irving Metzman

Security Guard

Joe Doolan

Kid in Street

John Doolan

Kid in Street

Melissa Ballan

Kid in Street

Florence Tarlow

Mrs. Nesbitt

Lou Jacobi

Plant Store Owner

Gordon Press

Prize Man

Bob Maroff

Prize Man

Marcella Lowery

Harriet

Jerome Collamore

Johnson Butler

Mark Fleischman

Waiter

Helen Hanft

Perry's Wife

John Eric Bentley

Perry

Raymond Serra

Racetrack Owner

Peter Evans

Preston

Dominic Guastaferro

Party Guest

Phil Oxnam

Orderly

Richard Hamilton

Bill

George Riddle

Bartender

Lawrence Tierney

Man in Coffee Shop

Bobo Lewis

Lady in Coffee Shop

B. Constance Barry

Wedding Guest

Kurt Schlesinger

Wedding Guest

Steve James

Man Outside Tie Store (uncredited)

Debra Lass

Bridesmaid (uncredited)

Mark Margolis

Wedding Guest (uncredited)

Marianne Muellerleile

Partygoer (uncredited)

Judi Passeltiner

Wedding Guest (uncredited)