text: Paramasivam Natarajan (1940–2016) was an Indian photochemist, the INSA Senior Scientist at the National Centre for Ultrafast Process of the University of Madras and the director of Central Salt and Marine Chemicals Research Institute (CSMCRI) of the Council of Scientific and Industrial Research. He was known for his research on photochemistry of co-ordination compounds and macromolecular dye coatings for stabilization of electrodes. He was an elected fellow of the Indian National Science Academy, International Union of Pure and Applied Chemistry (IUPAC) and the Indian Academy of Sciences. The Council of Scientific and Industrial Research, the apex agency of the Government of India for scientific research, awarded him the Shanti Swarup Bhatnagar Prize for Science and Technology, one of the highest Indian science awards, in 1984, for his contributions to chemical sciences.