Reinier de Graaf (1964, Schiedam) is a Dutch architect and writer. He is a partner in the Office for Metropolitan Architecture (OMA), where he leads projects in Europe, Russia and the Middle East. Reinier is the co-founder of OMA’s think-tank AMO and Sir Arthur Marshall Visiting Professor of Urban Design at the University of Cambridge. He is the author of the critically acclaimed “Four Walls and a Roof: The Complex Nature of a Simple Profession” and the recently published novel “The Masterplan”.