T. K. S. Elangovan (Tamil: தி.கோ.சீ இளங்கோவன்) (born 30 August 1954 in Chennai, Tamil Nadu, India) is an Indian politician. He was elected to the Rajya Sabha, the upper house of Indian Parliament from Tamil Nadu as a member of the Dravida Munnetra Kazhagam. He was earlier elected to the Lok Sabha, the lower house of the Parliament of India from Chennai North. He is also the Organisation Secretary of DMK. He is the son of Late TK Srinivasan also popularly known as Thathuva Medhai TK Srinivasan (Ex Rajya Sabha MP).