Petros Koumoutsakos is a Gordon McKay Professor of Computing in Science and Engineering in the John A. Paulson School of Engineering and Applied Sciences (SEAS) at Harvard University. He serves as chair of the area of Applied Mathematics and Faculty Director of the Institute for Applied Computational Science (IACS).

Petros is elected Fellow of the American Society of Mechanical Engineers (ASME), the American Physical Society (APS), the Society of Industrial and Applied Mathematics (SIAM). He has held visiting fellow positions at Caltech, the University of Tokyo, MIT, the Radcliffe Institute of Advanced Study at Harvard University and he is Distinguished Affiliated Professor at TU Munich.

He is the recipient of the Advanced Investigator Award by the European Research Council and the ACM Gordon Bell prize in Supercomputing. He is elected Foreign Member to the US National Academy of Engineering (NAE). His research interests are on the fundamentals and applications of computing and artificial intelligence to understand, predict and optimise fluid flows in engineering, nanotechnology, and medicine.