Madhan Karky Vairamuthu (Tamil: மதன் கார்கி வைரமுத்து) is an Southindian software engineer, research associate, lyricist, and film dialogue writer. He is better known as the son of poet and lyricist Vairamuthu. He is also an assistant professor of computer science at the College of Engineering, Guindy.
Madhan Karky became a lyricist for the 2010 science-fiction film Enthiran, penning the song "Irumbile Oru Irudhaiyam". For the same film, he assisted director S. Shankar in writing the film's dialogues, especially assisting with technical terminology.
However Kanden Kadhalai (2009), in which he had written the song "Ododi Poren", became his first release. For his work in Enthiran, he was awarded the Vijay Award for Best Find of the Year. He later went on to work as lyricist in the 2011 films, Engeyum Kaadhal, Ko and 180.
The song "Enamo Aedho", a song from the Ko's soundtrack, also became popular for its lyrics. His other works include high budget films including, A. R. Murugadoss's 7aam Arivu in which he has also penned a song in Chinese language among the soundtrack and S. Shankar's Nanban.
Madhan has penned songs in Portuguese for 180 and in Mandarin for 7aam Arivu and also written lyrics in 15 different languages for a duet song in Nanban.