P. Unnikrishnan (born 9 July 1964) is a Carnatic vocalist and a national award winning playback singer,Unnikrishnan was born to K. Radhakrishnan and Dr. Harini Radhakrishnan in Palakkad, Kerala.[1] The family home, Kesari Kuteeram, was a well known landmark of Madras city, with great grandfather Dr KN Kesari being an eminent Ayurvedic physician and the promoter of the popular Telugu women's magazine Gruhalakshmi .

He went to Asan Memorial Senior Secondary School, Chennai, in 1983. He graduated from Ramakrishna Mission Vivekananda College, Chennai, and received his B.Com degree from the Madras University. He earned a General Law and Post Graduate Diploma in Personnel Management and Industrial Relations.

He worked as an executive in Parry s Confectionery Ltd. from 1987 to 1994 and quit his job to become a professional singer.