| Tamil Nadu Legislature | |
| Coa Pic: | TamilNadu Logo.svg |
| Coa Res: | 200px |
| House Type: | Unicameral |
| Leader1 Type: | Speaker |
| Leader1: | M. Appavu |
| Party1: | DMK |
| Election1: | 2021 |
| Leader2 Type: | Deputy Speaker |
| Leader2: | K. Pitchandi |
| Party2: | DMK |
| Election2: | 2021 |
| Leader3 Type: | Chief Minister |
| Party3: | DMK |
| Election3: | 7 May 2021[1] |
| Leader4 Type: | Chief Government Whip |
| Leader4: | Govi. Chezhian |
| Party4: | DMK |
| Election4: | 2021 |
| Leader5 Type: | Leader of the Opposition |
| Leader5: | Edappadi K. Palaniswami |
| Party5: | AIADMK |
| Election5: | 2021 |
| Members: | 234 |
| Structure1: | Tamil Nadu Legislative Assembly election 2021.svg |
| Political Groups1: | Government (159) Opposition (62)
Others (13) Vacant seats Vacant (1) |
| Structure1 Res: | 250px |
| Voting System1: | First-past-the-post |
| Last Election1: | 6 April 2021 |
| Next Election1: | April 2026 |
| Session Room: | Fort St. George, Chennai 2.jpg |
| Session Res: | 120px |
| Meeting Place: | Fort St. George, Tamil Nadu Legislature Hall |
| Website: | Tamil Nadu Legislative Assembly |
| Footnotes: | The Assembly was established in 1937 for the Madras Presidency. The Presidency became Madras State in the Republic of India in 1950; Madras State in its current state was formed in 1956 and renamed as Tamil Nadu on 14 January 1969 |
The Tamil Nadu Legislature is the unicameral legislature of the Indian state of Tamil Nadu. The Legislature is composed of the Tamil Nadu Legislative Assembly and the state's governor.
Until 1 November 1986, the Tamil Nadu Legislature was a bicameral legislature which included the Tamil Nadu Legislative Council as the upper house, with the Legislative Assembly being the lower house.
In 2010, the erstwhile Dravida Munnetra Kazhagam government took steps to revive the Tamil Nadu Legislative Council and convert the legislature back into a bicameral one, but the administration lost power before completing the transition. The All India Anna Dravida Munnetra Kazhagam government which assumed power in 2011 expressed its intent not to revive the Legislative Council.