Badal Gupta (Bengali: বাদল গুপ্ত Badol Gupto), real name Sudhir Gupta (1912 – 8 December 1930), was an Indian revolutionary against British rule in India, who is noted for launching an attack on the Secretariat Building - the Writers' Building in the Dalhousie square in Calcutta, along with Benoy Basu and Dinesh Gupta.