# List of by-elections to the Tamil Nadu Legislative Assembly

The following is a list of by-elections held for the Tamil Nadu Legislative Assembly, India, since its formation in 1956.

## 14th Assembly
### 2011

| S.No | Date | Constituency | MLA before election | Party before election | Party before election | Elected MLA | Party after election | Party after election |
| 140 | 13 October 2011 | Tiruchirappalli West | M. Mariam Pichai | | All India Anna Dravida Munnetra Kazhagam | M. Paranjothi | | All India Anna Dravida Munnetra Kazhagam |

### 2012

| S.No | Date | Constituency | MLA before election | Party before election | Party before election | Elected MLA | Party after election | Party after election |
| 219 | 18 March 2012 | Sankarankoil | C. Karuppasamy | | All India Anna Dravida Munnetra Kazhagam | V. M. Rajalakshmi | | All India Anna Dravida Munnetra Kazhagam |
| 180 | 12 June 2012 | Sankarankoil | S. P. Muthukumaran | | Communist Party of India | V. R. Karthik Thondaiman | | All India Anna Dravida Munnetra Kazhagam |

### 2013

| S.No | Date | Constituency | MLA before election | Party before election | Party before election | Elected MLA | Party after election | Party after election |
| 83 | 23 February 2013 | Yercaud | C. Perumal | | All India Anna Dravida Munnetra Kazhagam | P. Saroja | | All India Anna Dravida Munnetra Kazhagam |

### 2015

| S.No | Date | Constituency | MLA before election | Party before election | Party before election | Elected MLA | Party after election | Party after election |
| 1 | 13 February 2015 | Srirangam | J. Jayalalithaa | | All India Anna Dravida Munnetra Kazhagam | S. Valarmathi | | All India Anna Dravida Munnetra Kazhagam |
| 2 | 27 June 2015 | Radhakrishnan Nagar | P. Vetriivel | | All India Anna Dravida Munnetra Kazhagam | J. Jayalalithaa | | All India Anna Dravida Munnetra Kazhagam |

## 15th Assembly
### 2017

| S.No | Date | Constituency | MLA before election | Party before election | Party before election | Reason | Elected MLA | Party after election | Party after election |
| 11 | 21 December 2017 | Dr. Radhakrishnan Nagar | J. Jayalalithaa | | All India Anna Dravida Munnetra Kazhagam | Died on 5 December 2016 | T. T. V. Dhinakaran | | Independent politician |

### 2019

| S.No | Date | Constituency | MLA before election | Party before election | Elected MLA | Party after election |
| 1 | 18 April 2019 | Thiruvarur | M. Karunanidhi | Dravida Munnetra Kazhagam | K. Poondi Kalaivanan | Dravida Munnetra Kazhagam |
| 2 | 18 April 2019 | Ambur | R. Balasubramani | All India Anna Dravida Munnetra Kazhagam | A. C. Vilwanathan | Dravida Munnetra Kazhagam |
| 3 | 18 April 2019 | Andipatti | Thanga Tamil Selvan | All India Anna Dravida Munnetra Kazhagam | A. Maharajan | Dravida Munnetra Kazhagam |
| 4 | 18 April 2019 | Gudiyattam | C. Jayanthi Padmanabhan | All India Anna Dravida Munnetra Kazhagam | S. Kathavarayan | Dravida Munnetra Kazhagam |
| 5 | 18 April 2019 | Hosur | P. Balakrishna Reddy | All India Anna Dravida Munnetra Kazhagam | S. A. Sathya | Dravida Munnetra Kazhagam |
| 6 | 18 April 2019 | Perambur | P. Vetrivel | All India Anna Dravida Munnetra Kazhagam | R. D. Sekar | Dravida Munnetra Kazhagam |
| 7 | 18 April 2019 | Periyakulam | K. Kathirkamu | All India Anna Dravida Munnetra Kazhagam | S. Saravana Kumar | Dravida Munnetra Kazhagam |
| 8 | 18 April 2019 | Poonamallee | T. A. Elumalai | All India Anna Dravida Munnetra Kazhagam | A. Krishnaswamy | Dravida Munnetra Kazhagam |
| 9 | 18 April 2019 | Thanjavur | M. Rangaswamy | All India Anna Dravida Munnetra Kazhagam | T. K. G. Neelamegam | Dravida Munnetra Kazhagam |
| 10 | 18 April 2019 | Thiruporur | M. Kothandapani | All India Anna Dravida Munnetra Kazhagam | L. Idhayavarman | Dravida Munnetra Kazhagam |
| 11 | 18 April 2019 | Harur | R. Murugan | All India Anna Dravida Munnetra Kazhagam | V. Sampathkumar | All India Anna Dravida Munnetra Kazhagam |
| 12 | 18 April 2019 | Manamadurai | S. Mariappankennady | All India Anna Dravida Munnetra Kazhagam | S. Nagarajan | All India Anna Dravida Munnetra Kazhagam |
| 13 | 18 April 2019 | Nilakottai | R. Thangathurai | All India Anna Dravida Munnetra Kazhagam | S. Thenmozhi | All India Anna Dravida Munnetra Kazhagam |
| 14 | 18 April 2019 | Pappireddyppatti | P. Palaniappan | All India Anna Dravida Munnetra Kazhagam | A. Govindasamy | All India Anna Dravida Munnetra Kazhagam |
| 15 | 18 April 2019 | Paramakudi | S. Muthiah | All India Anna Dravida Munnetra Kazhagam | N. Sadhan Prabhakar | All India Anna Dravida Munnetra Kazhagam |
| 16 | 18 April 2019 | Sattur | S. G. Subramanian | All India Anna Dravida Munnetra Kazhagam | M. S. R. Rajavarman | All India Anna Dravida Munnetra Kazhagam |
| 17 | 18 April 2019 | Sholinghur | N. G. Parthiban | All India Anna Dravida Munnetra Kazhagam | G. Sampathu | All India Anna Dravida Munnetra Kazhagam |
| 18 | 18 April 2019 | Vilathikulam | K. Uma Maheswari Reddiar | All India Anna Dravida Munnetra Kazhagam | P. Chinnappa Reddiar | All India Anna Dravida Munnetra Kazhagam |
| 19 | 19 May 2019 | Sulur | R. Kanagaraj | All India Anna Dravida Munnetra Kazhagam | P. Kandasamy | All India Anna Dravida Munnetra Kazhagam |
| 20 | 19 May 2019 | Aravakurichi | V. Senthil Balaji | All India Anna Dravida Munnetra Kazhagam | V. Senthil Balaji | Dravida Munnetra Kazhagam |
| 21 | 19 May 2019 | Ottapidaram | R. Sundararaj | All India Anna Dravida Munnetra Kazhagam | C. Shunmugaiah | Dravida Munnetra Kazhagam |
| 22 | 19 May 2019 | Tirupparankundram | A. K. Bose | All India Anna Dravida Munnetra Kazhagam | P. Saravanan | Dravida Munnetra Kazhagam |
| 23 | 21 October 2019 | Vikravandi | K. Rathamani | Dravida Munnetra Kazhagam | R. Muthamilselvan | All India Anna Dravida Munnetra Kazhagam |
| 24 | 21 October 2019 | Nanguneri | H. Vasanthakumar | Indian National Congress | V. Narayanan | All India Anna Dravida Munnetra Kazhagam |

## 16th Assembly
### 2023

| Date | S.No | Constituency | MLA before election | Party before election | Party before election | Elected MLA | Party after election | Party after election |
| 27 February 2023 | 98 | Erode (East) | Thirumagan Evera | | Indian National Congress | E. V. K. S. Elangovan | | Indian National Congress |

### 2024

| Date | Constituency | Constituency | Previous MLA | Previous MLA | Previous MLA | Reason | Elected MLA | Elected MLA | Elected MLA |
| 19 April 2024 | 233 | Vilavancode | S. Vijayadharani | | Indian National Congress | Resigned on 24 February 2024 | Tharahai Cuthbert | | Indian National Congress |
| 10 July 2024 | 75 | Vikravandi | N. Pugazhenthi | | Dravida Munnetra Kazhagam | Died on 6 April 2024 | Anniyur Siva | | Dravida Munnetra Kazhagam |