Henry Langley was a Canadian architect based in Toronto. He was active from 1854 to 1907. Among the first architects born and trained in Canada, he was a founding members of the Royal Canadian Academy of Arts in 1880 and was instrumental in establishing the Ontario Association of Architects in 1889. A conservative in architectural design, he is primarily known for designing numerous churches in the Toronto area, although he designed many secular buildings as well including residential, commercial and public buildings. Langley designed 70 churches throughout Ontario. He was the first chair of the Department of Architecture at the University of Toronto, where he taught during the 1880s and 1890s.

The Royal Canadian Academy of Arts (RCA) is a Canadian arts-related organization that was founded in 1880.