- Birthday: 24. June 1927
- Birthplace: Sirukoodalpatti, Tamil Nadu, India
- Awards: National Film Award for Best Lyrics - 1968, Sahitya Akademi Award for Tamil language - 1980
Kannadasan (24 June 1927 – 17 October 1981) was a Tamil poet and lyricist, heralded as one of the greatest and most important writers in the Tamil language. Frequently called Kaviarasu (King of Poets), Kannadasan was most familiar for his song lyrics in Tamil films and contributed around 5000 lyrics apart from 6000 poems and 232 books, including novels, epics, plays, essays, his most popular being the 10-part religious essay on Hinduism, captioned Arthamulla Indhumatham (Meaningful Hindu Religion). He won the Sahitya Akademi Award for his novel Cheraman Kadali in the year 1980 and was the first to receive the National Film Award for Best Lyrics, given in 1969 for the film Kuzhanthaikkaga.
Kannadasan worked in "Thiraioli", a Cine magazine run by 'Papa' Rama.Thiyagarajan in Rayavaram. Pudukkottai Distt and in Chennai. He also worked for "Thirumagal" magazine in Ramachandrapuram, Pudukkottai Distt. M. Karunanidhi conferred the title Kavingar to Kannadasan in a public meeting held at Pollachi in 1949.