Samir Kumar Brahmachari (born 1 January 1952) is an Indian biophysicist and Former Director General of the Council of Scientific & Industrial Research (CSIR) and Former Secretary, Department of Scientific and Industrial Research (DSIR), Government of India.
He is the Founder Director of Institute of Genomics and Integrative Biology (IGIB), New Delhi and the Chief Mentor of Open Source for Drug Discovery (OSDD) Project.
He is the recipient of J.C Bose Fellowship Award, DST (2012).