William Blackwell (July 24, 1850 – December 30, 1937) was a Canadian architect active in Peterborough, Ontario, for over 40 years.
His father, James Blackwell, emigrated from England in 1815 and initially settled in Ops Township before moving to Douro.
[2] Blackwell articled with his cousin, Toronto architect Walter Strickland, then worked in Winnipeg and New York City before setting up his practice in Peterborough in 1880.
He designed many landmark residences and public buildings in Peterborough and the surrounding area, often in the Romanesque Revival style.
[5] His wife, Maude Annie Hales, who he married in 1884, remained in the house he designed on Benson Avenue until her own death in 1952.