Affonso Eduardo Reidy (Paris, October 26, 1909 - Rio de Janeiro, August 10, 1964) was a Brazilian architect.
He was the son of an English father and a Brazilian mother.
Reidy entered the Escola Nacional de Belas Artes in Rio de Janeiro at age 17.
He apprenticed with the French urban planner Alfred Agache (1875-1959) during his studies.
Reidy graduated and became an architect in 1930.
Lúcio Costa appointed him as a teaching assistant to the architect Gregori Warchavchik (1896-1972) at the Escola Nacional de Belas Artes in the same year.