Since 2000, IAAC runs an international IAAC Lecture Series in which architects and experts from a variety of different disciplines present their work at IAAC. The lectures are open to the public, consisting of a high-quality cultural activity open to the city of Barcelona. Unless otherwise indicated, all the events of the Series are free with a mandatory Eventbrite registration.

Some of the Guest Lecturers for IAAC Lecture Series of the past years are: Bjarke Ingels, Winy Maas, Greg Lynn, Massimiliano Fuksas, Wolf Prix, Reinier de Graaf, Ben Van Berkel, Jaime Lerner, Gunter Pauli, Iñaki Abalos, Mark Burry, John Thackara, Carlo Ratti, Bernard Khoury, Indy Johar, Shigeru Ban, Stefano Boeri, Peter Cook, Hernan Diaz Alonso, Peter Eisenman, Yona Friedman, Thom Mayne, Farshid Moussavi, Nicholas Negroponte, John Palmesino, Michel Rojkind, Bob Sheil, Peter Trummer, Bernard Tschumi.