John Hutchins Cady FAIA (January 17, 1881 – September 27, 1967) was an American architect, architectural historian, author, and historical preservationist in Rhode Island.

Cady worked for numerous architectural firms in the area during this period including Clarke & Howe (1904); Stone, Carpenter & Wilson (1905); Peabody & Stearns (1906–1907); Howells & Stokes (1907); and for a brief time, the Atelier Duquesne in Paris with Raymond Hood and F. Ellis Jackson.

[1] During World War I, Cady served with Battery A in the Rhode Island National Guard and attended a trancing school for Field Officers in 1918 at Camp Zachary Taylor.

During World War II, Cady served on air raid shelter committees under the Providence Civilian Defense Council.

[2] Cady served on the City Plan Commission of Providence starting in 1915 and was elected chairman following the death of Henry Ames Barker in 1929.