Sri Ramakrishna Paramahamsa (18 February 1836 – 16 August 1886), born Gadadhar Chattopadhyay, was an Indian mystic, a promoter of bhakti traditions, and a teacher of the philosophy of Advaita Vedānta. His religious school of thought led to the formation of the Ramakrishna Mission by his most famous disciple Swami Vivekananda.