Thomas William Fuller (May 3, 1865 – November 4, 1951), the son of Thomas Fuller, was a Canadian architect. Before his selection as Dominion Architect, Fuller designed a number of federal buildings in Dawson City, Yukon, some of which are now designated as National Historic Sites of Canada. These include the Post Office (1899); Court House (1900–01); Territorial Administration Building, 5th Avenue (1901); Public School (1901) which burned 1957; and Commissioner's Residence (1901).
He served as Chief Dominion Architect from 1927 to 1936, designing a number of prominent public buildings in Canada. Thomas W. Fuller designed a number of post offices:
This centrally located Neo-Gothic style fortress like building with a low-pitched gable roof is in a modern residential neighbourhood adjacent to the Regina Exhibition Grounds,
Organizations that use the armoury include: Regina units of 38th Brigade Group: 10th Field Regiment, Royal Canadian Artillery, Royal Regina Rifles, 16th (Saskatchewan) Service Battalion, 16th Medical Company, cadet corps and the Military Museum of Saskatchewan