George Segal

Character: Brooks Wilson

Eva Marie Saint

Character: Selma Wilson

Sterling Hayden

Character: Lepridon

Keenan Wynn

Character: Edward

Nancie Phillips

Character: Nelly

Janis Young

Character: Grace

David Doyle

Character: Will

Paul Sparer

Character: Marve

Andrew Duncan

Character: Willy

Sherry Lansing

Character: Susan

Roland Winters

Character: Plommie

Edgar Stehli

Character: Mr. Kramm

Calvin Holt

Character: Danny

Mina Kolb

Character: Diane

Diana Douglas

Character: Mrs. Shavelson

David Ford

Character: Al

James Manis

Character: Charles

Mart Hulswit

Character: Ted

John Fink

Character: Brad

William Duffy

Character: Jay

Irving Selbst

Character: Benny

Martin Harvey Friedberg

Character: Roger

Lorraine Cullen

Character: Lizzie

Cheryl Bucher

Character: Hannah

Ed Crowley

Character: Mr. Shavelson

Roy Scheider

Character: Skip

Sab Shimono

Character: Byron

Eileen O'Neill

Character: Cindy

Diane Davies

Character: Barbie

Robert Paget

Character: Party Guest (uncredited)

John Reidy

Character: Flower Delivery Man (uncredited)

Betsy von Furstenberg

Character: Grace's Aunt (uncredited)