Affonso Eduardo Reidy (1909–1964) was a Brazilian architect and a leading figure in modernist urban planning and social housing. A key contributor to Brazilian modernism, he designed the Museum of Modern Art in Rio de Janeiro and pioneering public housing projects, such as Pedregulho and Gávea Housing Complexes. His work blended Le Corbusier-inspired functionalism with Brazilian climate adaptability, using elevated pilotis, open facades, and natural ventilation. Reidy’s contributions to affordable housing and urban development helped shape Brazil’s postwar architectural identity, influencing generations of architects focused on social responsibility and sustainable urbanism.