Brahmabandhav Upadhyay (born Bhavani Charan Bandyopadhyay) (Bengali: ব্রহ্মবান্ধব উপাধ্যায়; 11 February 1861 – 27 October 1907) was an Indian Bengali theologian, journalist and freedom fighter. He was closely attached with Keshub Chandra Sen, classmate of Swami Vivekananda and close acquaintance of Rabindranath Tagore.