Gandelsonas (born December 14, 1938 in Buenos Aires, Argentina) is an American architect and theorist whose specializations include urbanism and semiotics.
Gandelsonas is a founding partner of Agrest and Gandelsonas Architects, based in New York City, with Diana Agrest.
In addition to his professional work, Gandelsonas is a scholar.
He currently serves as the Class of 1913 Lecturer in Architecture at Princeton University and previously taught at Yale University and Harvard Graduate School of Design.