List of leaders of the opposition in the Tamil Nadu Legislative Assembly

Leader of the Opposition in the Tamil Nadu Legislative Assembly
Tamiḻnāṭu Caṭṭamaṉṟa Etirkkaṭcit Talaivar
Emblem of Tamil Nadu
Incumbent Edappadi K. Palaniswami since 11 May 2021
Tamil Nadu Legislative Assembly
Nominator	Members of the Official Opposition in the Tamil Nadu Legislative Assembly
Appointer	Speaker of the Tamil Nadu Legislative Assembly
Inaugural holder	T. Nagi Reddy
Formation	6 May 1952; 72 years ago (1952-05-06)
Website	www.assembly.tn.gov.in

The Leader of the Opposition in the Tamil Nadu Legislative Assembly is an elected Member of Legislative Assembly who leads the official opposition in the Tamil Nadu Legislative Assembly. The Leader of the Opposition in the Tamil Nadu Legislative Assembly is the chairperson of the largest political party in the legislative assembly that is not in government (provided that said political party has at least 10% of the seats in the legislative assembly).

Since 1952, the Tamil Nadu Legislative Assembly has had 18 leaders of the opposition. The longest-serving leader of the opposition, J. Jayalalithaa from All India Anna Dravida Munnetra Kazhagam became the legislative assembly's first and, to date, only female leader of the opposition. She was the first actress to become the leader of the opposition in the state's legislative assembly in India, while Desiya Murpokku Dravida Kazhagam's founder Vijayakant is the first actor to become the leader of the opposition in the state's legislative assembly in India. The Dravida Munnetra Kazhagam's former president, M. Karunanidhi, has the second-longest tenure, having held the office for 5 years and 259 days, and S. Balakrishnan from the Tamil Maanila Congress (Moopanar) has the third-longest tenure, having held the office for 4 years and 356 days.

The current incumbent has been Edappadi K. Palaniswami of the All India Anna Dravida Munnetra Kazhagam since 11 May 2021.^[1]