Padma Shree Award
He has been awarded the Padma Shree in the year 2004.
Playback Singer Award
In 2010 , He has won the 2nd National award for the best playback singer for the soulful rendition of the song "Jeeva Dangala, Gundla Rangla Ahsa” from the Marathi movie “Jogava” composed by Ajay Atul.
Lata Mangeshkar Award
In 2013, Hariharan was honoured with the National Lata Mangeshkar award.
- In 1977, Hariharan bagged the top prize in the All-India Sur Singaar competition
- Uttar Pradesh state award in 1977 for the song Ajeeb Saaneha in Gaman
- Gulfam", released in 1993 won him the Diva Award for the Best Album of the year.
- He has won the Screen Videocon Awards for the Best Playback (Male) in 1995
- Colonial Cousins won MTV Indian Viewer's choice award at New York. The album also won the Best Album, Best Pop Song, Best Production Values and the Viewer's Choice Award for 1996 at the [V] Channel Music Awards Nite.
- Screen Videocon Awards for the Best Male Pop Artiste and Kaash has won the Best Album in 2000.
- He has got the title of “SWARNA KURALOAN” in Sri Lanka on 8th March 2001
- He has got the tiltle of ‘RAGA CHAKRAVARTHY” (KING OF RAGAS) in Toronto on 29th September 2001
- He has been awarded by Tamilnadu State Award as the Best Play Back Singer of the year in 1995 & 2004.
- He has been awarded "Kalai Maamani Award" in the year 2004.
- He has been awarded the Padma Shree in the year 2004.
- He has been awarded Jesudas Award, with a privilege that the award is for a person who symbolises the unity of music by straddling the words of Carnatic and Hindustani Music, on 30th January 2005.
- He has been awarded "Jeevan P Jayachandran Award" in the year May 2006.
- He has been Awarded “Special Appreciation Award” by Sankara Eye Foundation, USA for extra ordinary effort and commitment towards the grand success of fundraising concerts to construct Sankara Eye Hospital – Bangalore, Drishti – Dallas, Srishti – Phoenix, Drishti – Los Angeles, Ek Nazar – Detroit in the year March – April 2007
- He has been Awarded “Award of Excellence” by India Association of Nebraska for his outstanding contribution to Indian Music on April 3, 2007 in Omaha, Nebraska, U S A.
- He has been Awarded “Samrat Vikramaditya Rashtriya Sangeet Alankaran Award” in Ujjain by M P Government on 26th March 2009.
- In 2010 , He has won the 2nd National award for the best playback singer for the soulful rendition of the song "Jeeva Dangala, Gundla Rangla Ahsa” from the Marathi movie “Jogava” composed by Ajay Atul
- He has been Awarded a Best Playback singer award for the song “Nenjukkul Peidhidum O …Shanthi” Film Vaaranam Aahiram and the same song is nominated for National Award.
- He has been Awarded “Master Deenanath Paritoshik” on the occasion of 68th Memorial day Function for his long dedicated services in the field of Music In March 2010