Narayana Balakrishnan Nair (1927–2010) was a marine biologist, ecologist and the founder president of Kerala Science Congress. He was known for his advocacy of trawling ban during monsoon seasons which was later accepted and imposed by the Government of Kerala. A Jawaharlal Nehru fellow, Nair was an elected fellow of all the major Indian science academies as well as the Zoological Society of London. 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 1971, for his contributions to biological sciences. He received the fourth highest Indian civilian honor of the Padma Shri in 1984.