Henry Sproatt (June 14, 1866 – October 4, 1934) was a Canadian architect who was prominent during the early 20th century.

He formed a partnership in 1890 with another celebrated architect, John A. Pearson, and with Frank Darling in 1893.

Sproatt was a Fellow of the Royal Institute of British Architects, and he died in Toronto in 1934.

The firm continued under Ernest Rolph until 1942 and was then taken over by his son, Charles Beverley Sproatt (1896–1976), from 1958 until 1970.

In recognition of his architectural achievements the University of Toronto conferred the honorary degree of Doctor of Laws to Sproatt in 1920.