Abhinav Bharat Society was a secret society established by Vinayak Damodar Savarkar and his brother Ganesh Damodar Savarkar in 1904.
Originally founded at Nasik as "Mitra Mela" when Vinayak Savarkar was still a student of Fergusson College at Pune, the society grew to include several hundred revolutionaries and political activists with branches in various parts of India, extending to London after Savarkar went to study law.
It carried out a few assassinations of British officials, following which the Savarkar brothers were convicted and imprisoned.
Savarkar's revolutionary propaganda led to the assassination of Lt. Col. William Curzon-Wyllie, the political aide to the Secretary of State for India, by Madanlal Dhingra on the evening of 1 July 1909, at a gathering of Indian students in the Imperial Institute in London.