Guido Wilhelmus Imbens is a Dutch American economist. On October 11, Imbens was awarded half of the 2021 Nobel Memorial Prize in Economic Sciences jointly with Joshua Angrist "for their methodological contributions to the analysis of causal relationships", with David Card awarded the other half. 

Since 2012, Imbens is a Professor of Economics at the Stanford Graduate School of Business. After earning his Ph.D. from Brown University in 1991, he taught at Harvard University, UCLA, and UC Berkeley.

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Imbens specializes in econometrics, and in particular methods for drawing causal inference. He serves as the editor of Econometrica from 2019 to 2023.

Imbens is a fellow of the Econometric Society (2001) and the American Academy of Arts and Sciences (2009). He was elected a foreign member of the Royal Netherlands Academy of Arts and Sciences in 2017. In 2020, he was elected as a Fellow of the American Statistical Association in 2020.