Humphrey Bogart
as Linus Larrabee
John Williams
as Thomas Fairchild
Marion Ross
as Spiller's girlfriend (uncredited)
Audrey Hepburn
as Sabrina Fairchild
William Holden
as David Larrabee
Ellen Corby
as Miss McCardle
Nancy Kulp
as Jenny (maid) (uncredited)
Marcel Dalio
as Baron St. Fontanel
Emory Parnell
as Charles (butler) (uncredited)
Emmett Vogan
as Board member (uncredited)
Walter Hampden
as Oliver Larrabee
Martha Hyer
as Elizabeth Tyson
Joan Vohs
as Gretchen Van Horn
Marcel Hillaire
as The Professor
Nella Walker
as Maude Larrabee
Francis Bushman
as Mr. Tyson
Marjorie Bennett
as Margaret (cook) (uncredited)
Kay Riehl
as Mrs. Tyson (uncredited)
Kay E. Kuter
as Servant (houseman) (uncredited)
Paul Harvey
as Dr. Calaway (uncredited)
Lily Demuynck Deydier
Christian Leonard
Arthur Ponsot
Annick Lambert