| Office: | Member of Uttar Pradesh Legislative Assembly |
| Term Start: | 1974 |
| Term End: | 1980 |
| Predecessor: | Dharamvir Singh Tyagi |
| Successor: | Mahendi Asgar |
| Office2: | First Deputy Chief Minister of Uttar Pradesh |
| Term Start2: | 1979 |
| Term End2: | 1980 |
| Constituency: | Morna |
| Occupation: | Politician |
| Children: | Sanjay Singh Chauhan |
| Party: | Indian National Congress (1974–77)Janata Party (1977–80) |
| Profession: | Agriculturist and Advocate |
| Nationality: | Indian |
Chaudhary Narayan Singh was served as the first Deputy Chief Minister of Uttar Pradesh.
His son Sanjay Singh Chauhan was a member of the Rashtriya Lok Dal (RLD) and a Member of Parliament representing Bijnor in Uttar Pradesh state in the 15th Lok Sabha.[1]
He died from COVID-19 on 24 April 2021 aged 67.[2]