Siddharth Mahadevan is an Indian film composer who is known for his songs in the film Bhaag Milkha Bhaag in which he sang "Zinda" and the rock version of the title song "Bhaag Milkha Bhaag".
Mahadevan got further acclaim for the song, "Malang", in Dhoom 3, by music director Pritam. He has also composed music for the Marathi films, Swapna Tujhe ni Majhe and Sugar Salt Ani Prem, with his cousin, Soumil Shringarpure. Additionally, he sang "Nachde Ne Sare" in Baar Baar Dekho.
On 12 October 2019, he performed for the Army officers at Fort William, Kolkata, West Bengal. GOC Eastern Command, Chief of Staff, Eastern Command and other officers and soldiers were present.
He is the son of Shankar Mahadevan, a film music composer and playback singer from India.