| Natham R. Viswanathan | |
| Party: | All India Anna Dravida Munnetra Kazhagam |
| Birth Date: | 1949 12, df=yes |
| Birth Place: | Uluppakudi[1] |
| Nationality: | Indian |
| Children: | Amarnath,Kavitha,Ranjitha |
| Alma Mater: | Alagappa College |
| Term Start1: | 13 July 2022 |
| 1Blankname1: | General Secretary |
| 1Namedata1: | Edappadi K. Palaniswami |
| Alongside1: | K. P. Munusamy |
| Office2: | AIADMK Organisation Secretary |
| Term Start2: | 2018 |
| Term End2: | 2022 |
| Office3: | Minister for Electricity, Prohibition & Excise |
| Term Start3: | 2011 |
| Term End3: | 2016 |
| 1Blankname3: | Chief Minister |
| 1Namedata3: | J.Jayalalithaa O. Panneerselvam |
| Office5: | Member of Legislative Assembly |
| Term Start5: | 2021 |
| Predecessor5: | M. A. Andi Ambalam |
| Constituency5: | Natham |
| Term Start6: | 1999 |
| Term End6: | 2016 |
| Predecessor6: | M. Andi Ambalam |
| Successor6: | M. A. Andi Ambalam |
| Constituency6: | Natham |
| Office4: | Minister for Transport |
| Term Start4: | 2001 |
| Term End4: | 2006 |
| 1Blankname4: | Chief Minister |
| 1Namedata4: | J.Jayalalithaa O. Panneerselvam |
| Office8: | Chairman - Natham Panchayat Union |
| Term Start8: | 1986 |
| Term End8: | 1991 |
| Residence: | Vembarpatti Post, Dindigul Taluk, Dindigul District |
Natham R. Viswanathan (born 11 December 1949) is an Indian politician and deputy general secretary of All India Anna Dravida Munnetra Kazhagam. He is a member of the Tamil Nadu Legislative Assembly from Natham Constituency. He was the Minister for Electricity and Prohibition and Excise, Govt. of Tamil Nadu.[2] [3] Previously, he was elected to the Tamil Nadu legislative assembly as an Anna Dravida Munnetra Kazhagam candidate from Natham constituency in 1999 after the death of then legislative member of Natham, M. Andi Ambalam. He has won consecutively in 2001, 2006 and 2011 elections in a landslide vote count and has a cult following.[4] [5] [6]