| Rajen Borthakur | |
| Office: | Member of Assam Legislative Assembly |
| Term Start: | 2011 |
| Term End: | 2015 |
| Constituency: | Tezpur (Vidhan Sabha constituency) |
| Predecessor: | Brindaban Goswami |
| Successor: | Brindaban Goswami |
| Birth Place: | Tezpur |
| Birth Date: | 5 November 1964 |
| Death Place: | Times Hospital, Tezpur |
| Party: | Indian National Congress |
| Residence: | Tezpur |
| Alma Mater: | Darrang College |
| Profession: | Politician |
Rajen Borthakur (5 November 1964 – 10 December 2019)[1] was an Indian politician. He was elected to the Assam Legislative Assembly in 2011 from Tezpur Assembly constituency on an Indian National Congress ticket.He was again elected from Rangapara Assembly constituency in the 2019 by election as a member of the Bharatiya Janata Party. By-elections happened due to Pallab Lochan Das being elected to Parliament.[2] [3] [4] [5] Formerly, he was with Indian National Congress.