2016–2017 Tamil Nadu Legislative Assembly by-elections
During the 2016–2017 timeframe, by-elections were held in Tamil Nadu, India, due to the following events:
- 25 May 2016 - Tirupparankundram AIADMK MLA S M Seenivel died
- 5 December 2016 - Radhakrishnan Nagar AIADMK MLA and CM of Tamil Nadu J. Jayalalithaa died
Events leading to By-Election
The 123 AIADMK members include three independents who contested under the AIADMK symbol. They are M.Thamimun Ansari from Nagapattinam, U. Thaniyarasu from Kangayam and Karunas from Tiruvadanai.November 2018 by-elections
On 26 October 2016, the Election Commission announced that the election for Thiruparankundram, Aravakurichi and Thanjavur constituencies would be held on 19 November 2016. The outcome was:| Constituency | Contestant DMK | Contestant ADMK | Winning candidate | Winning party | Margin |
| Aravakurichi | K. C. Palanisamy | V. Senthil Balaji | V. Senthil Balaji | AIADMK | 23,661 |
| Thanjavur | Anjugam Boopathy | M. Rangaswamy | M. Rangaswamy | AIADMK | 26,874 |
| Thiruparankundram | Saravanan | A. K. Bose | A. K. Bose | AIADMK | 42,670 |