| Somendra Nath Mitra | |
| Birth Date: | 1941 12, df=yes |
| Death Place: | Kolkata, West Bengal, India |
| Death Cause: | Cardiac arrest |
| Office: | President of the West Bengal Pradesh Congress Committee |
| Term Start: | 16 September 2018 |
| Term End: | 30 July 2020 |
| Predecessor: | Adhir Ranjan Chowdhury |
| Successor: | Adhir Ranjan Chowdhury |
| Term Start1: | 1992 |
| Term End1: | 1998 |
| Predecessor1: | Siddhartha Shankar Ray |
| Successor1: | A. B. A. Ghani Khan Choudhury |
| Office2: | Member of Parliament, Lok Sabha |
| Constituency2: | Diamond Harbour |
| Term Start2: | 16 May 2009 |
| Term End2: | 28 January 2014 |
| Predecessor2: | Samik Lahiri |
| Successor2: | Abhishek Banerjee |
| Office3: | Member of West Bengal Legislative Assembly |
| Constituency3: | Sealdah |
| Term3: | 1972-1977 |
| Term4: | 1982-2009 |
| Predecessor4: | Binoy Banerjee |
| Successor4: | Sikha Mitra |
| Predecessor3: | Binoy Banerjee |
| Successor3: | Binoy Banerjee |
| Party: | Indian National Congress |
| Otherparty: | All India Trinamool Congress (2008-2014) |
| Spouse: | Sikha Mitra |
| College: | Bangabasi College |
| Children: | Rohan Mitra |
| Alma Mater: | University of Calcutta (B.Sc.), (LL.B.) |
Somendra Nath Mitra (31 December 1941 – 30 July 2020), popularly known as Somen Mitra, was an Indian politician. He was a member of the 15th Lok Sabha, elected from the Diamond Harbour constituency in West Bengal state in 2009 as a Trinamool Congress candidate. He was a member of the West Bengal Legislative Assembly from Sealdah from 1972 to 2006. He was the president of the state unit of the Indian National Congress. In July 2008, he left the Indian National Congress and formed a new party, named, Pragatisheel Indira Congress.[1] In October 2009, the political party founded by him was officially merged with the All India Trinamool Congress.[2] He rejoined his parent party Congress in January, 2014, before that he resigned from his MP post.[3] He became the president of West Bengal Pradesh Congress Committee for the second time on 22 September 2018 and served until his death on July 30, 2020.[4]