18th National Board of Review Awards December 18, 1946 The 18th National Board of Review Awards were announced on 18 December 1946. Best English-language films Henry V Open City The Best Years of Our Lives Brief Encounter A Walk in the Sun It Happened at the Inn My Darling Clementine The Diary of a Chambermaid The Killers Anna and the King of Siam Winners Best Film: Henry V Best Actor: Laurence Olivier (Henry V) Best Actress: Anna Magnani (Open City) Best Director: William Wyler (The Best Years of Our Lives) External links National Board of Review of Motion Pictures :: Awards for 1946 1946 1946 film awards 1946 in American cinema