Osmund Bopearachchi (born 1949) is a Sri Lankan historian and numismatist who has specialized notably standardized the coinage of the Indo-Greek and Greco-Bactrian kingdoms. He is currently[when?] Emeritus Director of the CNRS at the École normale supérieure and Adjunct Professor of Central and South Asian Art, Archaeology, and Numismatics, University of California, Berkeley.