Thomas Roger Trautmann is an American historian, cultural anthropologist, and Professor Emeritus of History and Anthropology at the University of Michigan. He is considered a leading expert on the Arthashastra, the ancient Hindu text on statecraft, economic policy, and military strategy, written in Sanskrit. Trautmann has mentored many students during his tenure at the University of Michigan. His studies focus on ancient India, the history of anthropology, and other related subjects. Trautmann's work in Indology has been credited with illuminating the underlying economic philosophy that governed ancient Indian kinship. He has also written book-length studies on both Dravidian and American Indian kinship. His most recent study concerns the use of the elephant in ancient India.