Bhupendranath Datta (4 September 1880 – 25 December 1961) was an Indian communistrevolutionary and later a noted sociologist and anthropologist. He was younger brother of Swami Vivekananda, and he was also associated with Rishi Aurobindo in his political works. In his youth, he was closely associated with the Jugantar movement, serving as the editor of ''Jugantar Patrika'' until his arrest and imprisonment in 1907. In his later revolutionary career, he was privy to the Indo-German Conspiracy. The Asiatic Society today holds the ''Dr. Bhupendranath Datta memorial lecture'' in his honour.
Datta was also a writer with several books on Indian culture and society to his credit. He wrote a book named "''Swami Vivekananda, Patriot-prophet".''
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