Rajkumar Udaybhan Narain Singh (born 4 December 1973 in New Delhi, India) is an Indian politician who was the Independent Director of JIADA (Jharkhand Industrial Area Development Authority) in the Government of Jharkhand and was one of the leaders of the Jharkhand Vikas Morcha but later joined Bhartiya Janta Party in 2013. Being close to Rajnath Singh, gained popularity in the party also. Belongs to the erstwhile royal family of Ramgarh Raj and has a strong hold over the North Chotanagpur belt (Chatra, Hazaribagh, etc). Singh is grandson of Ramgarh brothers Maharaj Kumar Dr. Basant Narain Singh and Maharaja Kamakhya Narain Singh Bahadur.
| Udaybhan Narain Singh | |
|---|---|
| ‘Titular’ Rajkumar Bahadur of Ramgarh Raj | |
| Member of Narain Raj Parivar – Ramgarh Raj | |
| Predecessor | Maharaj Kumar Mayurdhwaja Narain Singh G.S.S. |
| Heir apparent | Rajkumar Rudra Narain Singh |
| Born | 4 December 1973 New Delhi |
| Spouse | Kunwarani Divya Devi Singh |
| Issue | Rajkumar Rudra Narain Singh |
| House | Narain |
| Father | Maharaj Kumar Mayurdhwaja Narain Singh G.S.S. |
| Mother | Mahakunwarani Shashi Prabha Singh |
| Religion | Hinduism |