| Nasimuddin Siddiqui | |
| Office1: | Member of Uttar Pradesh Legislative Council |
| Term Start1: | 31 January 2015 |
| Term End1: | 21 July 2020 |
| Constituency1: | Elected by Members of Uttar Pradesh Legislative Council |
| Birth Date: | April df=y |
| Birth Place: | Banda, Uttar Pradesh, India |
| Residence: | Lucknow, Uttar Pradesh |
| Party: | Indian National Congress (2018–present) |
| Otherparty: | Bahujan Samaj Party (1991–2017) |
| Nationality: | Indian |
| Office2: | Leader of Opposition, Uttar Pradesh Legislative Council |
| Term2: | 16 March 2012 - 28 March 2017 |
| Predecessor2: | Ahmed Hasan |
| Successor2: | Ahmed Hasan |
| Spouse: | Husna Siddiqui |
| Children: | 3 sons |
Nasimuddin Siddiqui (born 4 June 1959) is an Uttar Pradesh politician and a member of Indian National Congress, formerly a prominent member of Bahujan Samaj Party. He was expelled by BSP chief Mayawati on 10 May 2017. He became a MLA in Uttar Pradesh Legislative Assembly in 1991. Later he was made a cabinet minister in Mayawati government.[1] He joined Indian National Congress on 22 February at congress office, New Delhi with more than 35000 of his supporters and With Several Mp's And MLA's of Uttar Pradesh.