| Office: | Minister of Jails Government of Uttar Pradesh |
| Term Start: | 24 June 1991 |
| Term End: | 6 December 1992 |
| 1Blankname: | Chief Minister |
| 1Namedata: | Kalyan Singh |
| Office2: | Member of Uttar Pradesh Legislative Assembly |
| Term Start2: | 1989 |
| Term End2: | 1993 |
| Predecessor2: | Raj Bahadur |
| Successor2: | Shri Ram Yadav |
| Constituency2: | Bayalsi |
| Term Start3: | 1969 |
| Term End3: | 1977 |
| Predecessor3: | Lal Bahadur |
| Successor3: | Chandra Sen |
| Constituency3: | Bayalsi |
| Birth Date: | 13 August 1937 |
| Birth Place: | Maheshpur, Jaunpur district |
| Party: | Bharatiya Janata Party |
| Spouse: | Susheela Singh |
| Children: | 1 son (Krishna Pratap), 4 daughters |
| Father: | Ramsurat Singh |
| Profession: | Politician |
Umanath Singh (13 August 1937-13 September 1993) was an Indian politician from Uttar Pradesh who served as the jail minister in First Kalyan Singh ministry in 1991. He was elected to Uttar Pradesh Legislative Assembly from Bayalsi constituency in 1969 and 1974 on the symbol of Jana Sangh. He was elected from Bayalsi again in 1989 and 1991 on the symbol of Bharatiya Janata Party.[1] [2] [3] His son Krishna Pratap Singh had represented Jaunpur Lok Sabha constituency from 2014 to 2019.