Michael O'Herlihy
Ireland
Rex O'Malley
England
Maureen O'Sullivan
Ireland
Peter O'Toole
Ireland
Merle Oberon
India
Warner Oland
Sweden
Nina Olivette
USA
Laurence Olivier
England
Henry Oscar
England
Rafaela Ottiano
Italy
Maria Ouspenskaya
Russian Empire [now Russia]
Reginald Owen
England
Bill Owen
England
Patricia Owens
Canada
Alan J. Pakula
New York City
George Pal
Austria-Hungary (now Hungary)
Lilli Palmer
Prussia
Paul Panzer
Germany
Irene Papas
Greece
Cecilia Parker
Canada
Barbara Parkins
Canada
Gabriel Pascal
Austria-Hungary
Joe Pasternak
Austria-Hungary
J. Pat O'Malley
England
Michael Pate
Australia