Thaddeus Antonius Gerardus Maria (Geert) Reuten (born 16 April 1946 in Heerlen) is a Dutch economist and former politician.
Reuten also teaches economics at the University of Amsterdam, and is internationally recognized as an expert on Marx and Hegel.
Reuten studied economics and sociological economics at Erasmus University Rotterdam and at Birkbeck College of the University of London.
His prominent work The Capitalist System is now also used as a textbook in University of Amsterdam for advanced BSc and MSc course.
Reuten has also been active in the alter-association Association for the Taxation of Financial Transactions for the Aid of Citizens, ATTAC.