William B. Mack (8 April 1872 – 13 September 1955) was 'n Amerikaanse akteur. Hy was bekend vir sy rolle in die rolprente Virtuous Men (1919), The Deep Purple (1920), Missing Millions (1922), en Backbone (1923). 1919: Virtuous Men 1920: The Deep Purple 1922: Missing Millions 1923: Backbone William B. Mack in die Internet-rolprentdatabasis