S. Nair, also known as Athippatta Sivaraman Nair, was an Indian painter, cartoonist, and illustrator from Kerala. He was born in the village of Karalmanna in the district of Palakkad and studied at the Madras School of Arts. He started his profession in Mathrubhumi and Jayakerala, where he was employed till the end. The majority of Nair's works, which were primarily featured in Mathrubhumi Weekly, were unique illustrations for books and short tales. One of V. S. Khandekar's best-known works was a set of illustrations for the Malayalam translation of the Marathi novel Yayati. He produced 115 original works, including illustrations and a few paintings, and was regarded as Kerala's foremost illustrator. On June 30, 1988, he passed away.