Alexei (Alyosha) Efros is professor at UC Berkeley and affiliated with the Berkeley Artificial Intelligence Research Lab (BAIR). Prior to that, he was for a decade on the faculty of Carnegie Mellon University, and has also been affiliated with École Normale Supérieure/INRIA and University of Oxford. His research is in the area of computer vision and computer graphics, especially at the intersection of the two. He is particularly interested in using data-driven techniques to tackle problems where large quantities of unlabeled visual data are readily available. He has been honored with numerous prizes, including the following: ACM Prize in Computing (2016), three PAMI Helmholtz Test-of-Time Prizes (1999,2003,2005), PAMI Thomas S. Huang Memorial Prize (2023).