Oswald J. Werner (born February 26, 1928), known as Ossy, was a Professor of Anthropology and Linguistics for thirty years at Northwestern University and retired in 1998 as Professor Emeritus of Anthropology and Linguistics. During this period he researched the Navajo language and culture. Although specializing in their medicine and science, he impacted anthropology, linguistics, ethnography, ethnographic methodology, ethnoscience, and cognitive anthropology.