Tamilaga Vettri Kazhagam (TVK) emerged as the single largest party with 108 seats.
The majority mark is 118 out of a total of 234 seats; no party secured a full majority, leading to a hung Assembly.
Joseph C. Vijay led TVK in its debut election and won from Perambur and Tiruchirappalli (East).
Dravida Munnetra Kazhagam won 73 seats, and All India Anna Dravida Munnetra Kazhagam (AIADMK) secured 53 seats.
The election saw a three-cornered contest mainly between TVK, DMK, and AIADMK, breaking the long-standing two-party dominance in the state.
Indian National Congress (INC), Pattali Makkal Katchi, Communist Party of India, Communist Party of India (Marxist) and others hold limited seats and may play a key role in post-poll support.
Tamil Nadu recorded its highest-ever voter turnout of 85.1%.