Biraja Sankar Guha (Bengali: বিরজাশঙ্কর গুহ) (15 August 1894 – 20 October 1961) was an Indian physical anthropologist, who classified Indian people into races around the early part of the 20th century and he was also a pioneer to popularize his scientific ideas in the vernacular. He was the first Director of the Anthropological Survey of India (ASI) (1945–1954).