| Ram Vishnun Singh | |
| Birth Date: | 1954 7, df=yes[1] |
| Birth Place: | Village Dhakakaram, P.O. Barnav, Dist Bhojpur Arrah, India |
| Residence: | Patna, Bihar |
| Office: | Member of Bihar Legislative Assembly |
| Constituency: | Jagdishpur |
| Term Start: | 2015 |
| Predecessor: | Dinesh Kumar Singh |
| Successor: | incumbent |
| Party: | Rashtriya Janata Dal |
| Alma Mater: | BSC (math) |
| Profession: | Politician |
Ram Vishnun Singh also known as Lohiya Ji and popularly called as Ram Vishaun Yadav is an Indian politician. He was elected to the Bihar Legislative Assembly from Jagdishpur (Vidhan Sabha constituency)[2] as the 2015 Member of Bihar Legislative Assembly as a member of the Rashtriya Janata Dal.[3]