Hariharan is an Indian Playback Singer who has sung for Malayalam, Tamil, Hindi, Kannada, Marathi, Bhojpuri and Telugu films.He has sung more than 500 Tamil songs and nearly 200 Hindi songs. He has also sung hundreds of songs in Malayalam, Telugu, Kannada, Marathi and Bengali languages.In 2004, he was honoured with the Padma Shri by the Government of India and is a two-time National Award winner.
At the start of his career, Hariharan sang for a number of TV serials . In 1977, he bagged the top prize in the All India Sur Singaar Competition. In 1978 he sang for Hindi movie Gaman. Hariharan also sang in Roja Movie. list of Movies in Which he sang are Muthu, Minsara Kanavu, Jeans, Indian, Mudhalvan, Taal, Rangeela, Indira, Iruvar, Anbe Aaruyire, Kangalal Kaithu Sei, Sivaji, Alaipayuthey, Kannathil Muthamittal, Guru, Enthiran. In 1998, Hariharan won the national award for the best playback singer for Mere Dushman Mere Bhai.
Hariharan got another National Award for the Marathi song “Jiv Rangla” from Jogwa.Hariharan has acted in a Tamil film Power of Women.