Ramakrishna Pillai Ramachandran Nair (born 23 April 1939) is a retired Indian Administrative Service officer, who served as collector of Kannur and Kollam districts, managing director of , secretary to various departments, and Chief Secretary of Kerala state in different intervals. He was also the founding Vice Chancellor of , . A prolific writer, he has also written many poems and essays in Sanskrit (under the pseudonym Thulaseevanam), Malayalam and English. His Sanskrit compositions, most of them being Carnatic kritis, praise more on the deities of Kerala temples, especially around Thiruvananthapuram and Kottayam. Nair is credited with popularising many temples in Kerala.