S. Gurunathan was an Indian politician and former Member of the Legislative Assembly. He was elected to the Tamil Nadu Legislative Assembly as a Dravida Munnetra Kazhagam candidate from Palayamkottai constituency in 1989 election.[1] In 2024, he joined the Bharatiya Janata Party in the presence of Tamil Nadu BJP chief K. Annamalai and Rajeev Chandrasekhar.[2] [3] [4]