Rem Koolhaas is a Dutch architect and academic. He heads the Office for Metropolitan Architecture (OMA), an internationally-focused architectural firm, and has been Professor in Practice of Architecture and Urban Design at Harvard University's Graduate School of Design since 1995.

Born in Rotterdam, the Netherlands in 1944, Koolhaas became an architect after working in journalism and script writing. He graduated from the Architectural Association, London in 1972 and subsequently co-founded the Office for Metropolitan Architecture (OMA) in 1975. 

Sources:

"Rem Koolhas, 2000 Laureate: Biography." The Pritzker Architecture Prize. The Hyatt Foundation, 2019. https://www.pritzkerprize.com/sites/default/files/inline-files/2000_bio_0.pdf. Archived at https://perma.cc/8SRQ-G953.

"Remment Koolhaas." Harvard University Graduate School of Design. Harvard University, 2017. https://www.gsd.harvard.edu/person/remment-koolhaas/. Archived at https://perma.cc/79JB-NPBH.