(1910–85; b. s’Graveland, Netherlands; d. New Haven, CT)
Dutch econometrician. Having initially studied mathematics, Koopmans obtained his MSc in theoretical physics from U Utrecht in 1933 and his PhD in the emerging area of econometrics from U Leiden in 1936. In 1940 Koopmans moved to Washington, working as a statistician. He joined U Chicago in 1944 and then, in 1955, Yale U. He was awarded the Nobel Prize in Economics in 1975.