Ananthasairam Rangarajan was born in 1946 in a family of agriculturists and had teaching degrees in Education from University of Madras. He holds a Post Graduate Diploma in the teaching of English from Central Institute of English and Foreign Languages, Hyderabad. His career as a teacher in various capacities spread over three decades in many institutions, and Dr. Radhakrishnan Award for Best Teacher was bestowed on him by Tamil Nadu Government in 1997.
Ananthasairam has been writing in Tamil since 1967. Leading Tamil magazines have published his short stories and articles. He has written personal development books and an English novel. He lives in Chennai.