Ramaswamy Aiyer Krishnamurthy (9 September 1899 – 5 December 1954), better known by his pen name Kalki, was an Indian writer, journalist, poet, critic and Indian independence activist. He was named after "Kalki", the tenth and last avatar of the Hindu God Vishnu. His writings include over 120 short stories, 10 novellas, 5 novels, 3 historical romances, editorial and political writings and hundreds of film and music reviews.
Krishnamurthy's father was Ramaswamy Aiyar, a poor accountant in Puttamangalam village in the old Tanjore district of erstwhile Madras Presidency. He began his primary education in his village school and later attended Municipal High School in Mayavaram but quit in 1921, just short of completion of his Senior School Leaving Certificate, in response to Mahatma Gandhi's 1921 call for non-co-operation joining the Indian National Congress instead.
Kalki was also a film and music critic who wrote under the pseudonym Karnatakam. He also penned many lyrics for many songs, most of which were adapted into Carnatic Music.
Kalki died in Chennai on 5 December 1954 aged 55 years from tuberculosis. Kalki magazine's special issue dated 5 December 1954 (The day he died) for Annai Sarada Devi was his last editorial work. That magazine shared the information that his health was improving prior to his demise.