Arthur is a 30-year-old child who will inherit $750 million if he complies with his family's demands and marries the woman of their choosing.
Dudley Moore
as Arthur Bach
Liza Minnelli
as Linda Marolla
John Gielgud
as Hobson
Geraldine Fitzgerald
as Martha Bach
Jill Eikenberry
as Susan Johnson
Stephen Elliott
as Burt Johnson
Ted Ross
as Bitterman
Barney Martin
as Ralph Marolla
Thomas Barbour
as Stanford Bach
Anne DeSalvo
as Gloria
Marjorie Barnes
as Hooker
Dillon Evans
as Plaza Maitre D'