George Segal

Brooks Wilson

Eva Marie Saint

Selma Wilson

Sterling Hayden

Lepridon

Keenan Wynn

Edward

David Doyle

Will

Andrew Duncan

Willy

Sherry Lansing

Susan

Roland Winters

Plommie

Edgar Stehli

Mr. Kramm

Mina Kolb

Diane

Diana Douglas

Mrs. Shavelson

John Fink

Brad

William Duffy

Jay

Ed Crowley

Mr. Shavelson

Roy Scheider

Skip

Sab Shimono

Byron

Robert Paget

Party Guest (uncredited)