| Office: | Member 15th Lok Sabha |
| Term Start: | 2009 |
| Term End: | 2014 |
| Predecessor: | Munshiram Singh |
| Successor: | Kunwar Bhartendra Singh |
| Constituency: | Bijnor |
| Birth Date: | 1961 10, df=yes |
| Birth Place: | Muzaffarnagar, Uttar Pradesh, India |
| Death Date: | (aged 52) |
| Nationality: | Indian |
| Party: | Rashtriya Lok Dal |
| Spouse: | Anuradha |
| Children: | Chandan Chauhan |
| Alma Mater: | Chaudhary Charan Singh University |
| Father: | Chaudhary Narain Singh |
| Occupation: | Politician |
| Committees: | Member, Committee on Food, Consumer Affairs and Public Distribution 31 Aug. 2009 |
| Website: | Lok Sabha bio |
| Office2: | Member of Uttar Pradesh Legislative Assembly |
| Termstart2: | 1996 |
| Termend2: | 2002 |
| Predecessor2: | Rampal Singh Saini |
| Successor2: | Rajpal Singh Saini |
Sanjay Singh Chauhan (10 October 1961 – 2 October 2014) was an Indian politician. He was the active member of the Rashtriya Lok Dal (RLD) and was a member of Parliament representing Bijnor in Uttar Pradesh state in the 15th Lok Sabha. He was also a Member of State Legislative Assembly, Uttar Pradesh from 1996 to 2001.
He was the son of Chaudhary Narayan Singh ex Deputy CM of Uttar Pradesh. He graduated with B.A., LL.B., was educated at S.D. Degree College and D.A.V. Degree College, Muzaffar Nagar and Chaudhary Charan Singh University, Meerut. He was a notable chauhan Gurjar leader from Uttar Pradesh.[1]