William McMaster (June 10, 1851 – May 5, 1930) was a Canadian businessman who had two successful careers.
McMaster was born in Montreal on June 10, 1851 and married Lucy A. Greene from Vergennes, Vermont on September 18, 1877.
McMaster served 35 years at the Montreal Rolling Mills and retired as managing director in 1910 at the time of the formation of the Steel Company of Canada (later "Stelco").
The Steel Company was created from the amalgamation of the Montreal Rolling Mills; the Hamilton Steel and Iron Company; the Canada Screw Co.; the Canada Bolt and Nut Co. and the Dominion Wire Manufacturing Co.
He was also a Director of the Bank of Montreal; Sherwin Williams Co. Ltd.; Canada Paint Co. Ltd.; Consumers Cordage Co. Ltd.; Penman's Limited; Paton Manufacturing Co. and the British and Mercantile Insurance Co.[1]