Remment Lucas "Rem" Koolhaas (born 17 November 1944) is a Dutch architect, architectural theorist, urbanist and Professor in Practice of Architecture and Urban Design at the Graduate School of Design at Harvard University. Koolhaas studied at the Architectural Association School of Architecture in London and at Cornell University in Ithaca, New York. Koolhaas is the founding partner of OMA, and of its research-oriented counterpart AMO, currently based in Rotterdam, Netherlands. In 2005 he co-founded Volume Magazine together with Mark Wigley and Ole Bouman.
In 2000 Rem Koolhaas won the Pritzker Prize. In 2008 Time put him in their top 100 of The World's Most Influential People.