Hindustan Socialist Republican Association (HSRA), previously known as the Hindustan Republican Army and Hindustan Republican Association (HRA), was a radical left-wing Indian revolutionary organisation were founded by Sachindranath Sanyal - Shanyal Babu and later on it other joined. After changes of Shaheed-E Aazam Bhagat Singh's new ideology and the influence of the Russian Revolution, they held meetings in Feroz Shah Kotla Maidan and added the word socialist to their name. Ram Prasad Bismil, Ashfaqulla Khan, Sachindra Nath Bakshi, Sachindranath Sanyal and Jogesh Chandra Chatterjee were then leaders. HRA's manifesto titled The Revolutionary and written constitution were produced as evidence in the Kakori conspiracy case of 1925.

The Revolutionary movement for Indian Independence was part of the Indian independence movement comprising the actions of violent underground revolutionary factions. Groups believing in armed revolution against the ruling British fall into this category, as opposed to the generally peaceful civil disobedience movement spearheaded by Mahatma Gandhi.