Marc Oliver Rieger (born September 22, 1974) is a German mathematician and finance professor.
His research covers the areas of behavioural finance, decision and game theory, financial derivatives, and calculus of variation.
Together with Thorsten Hens and Mei Wang, he was one of the authors of the INTRA survey (International Test on Risk Attitudes) that collected risk and time preferences in 53 countries worldwide leading to various follow-up studies by other researchers and practitioners and media coverage by leading newspapers in Germany and elsewhere.
Rieger studied mathematics at University of Konstanz from 1993 to 1998, and obtained a PhD at Max Planck Institute for Mathematics in the Sciences, Leipzig, in 2001, under the supervision of Stefan Müller.
He worked as research scholar and postdoc at Carnegie Mellon University, Scuola Normale Superiore, University of Zürich and ETH Zürich.