| Name | Hon'ble Mr. Justice Sunil Kumar Sinha |
| Date of Birth | 07/07/1954 |
| Initial Joining | 01/12/2004 |
| Joining at Sikkim | 14/07/2014 |
| Served at Sikkim Upto | 29/03/2015 |
| Duration | 8 months 15 days |
- Hon'ble Mr. Justice Sunil Kumar Sinha was born in a lawyers family at Ambikapur (C.G.) on 07/07/1954. He got school education in Govt. Multipurpose Higher Secondary School, Ambikapur. He took his B.Sc. Degree from Govt. Post Graduate College, Ambikpur in the year 1973 and thereafter also took Masters Degree in Botany from the same Institution, in the year 1975. He did his LL.B. in the year 1980 from Govt. Post Graduate College Ambikapur and was placed in first division. He was enrolled as an advocate in the State Bar Council of M.P. on 03/09/1980. He started his practice in the District and Sessions Court at Ambikapur, under the guidance of his father, Late S.P. Sinha, Advocate, who was an eminent lawyer of Civil, Criminal and Revenue side.
- He has worked in all branches in the Trial Court at Ambikapur from 1980 to 1993. Thereafter he shifted to the High Court of M.P. at Jabalpur where he practiced till October 2000. There also he did practice in Civil, Criminal and Constitutional side. Further, he practiced in the State Administrative Tribunal at Jablalpur and handled many cases of different nature. After re-organization of the state of M.P. he shifted to High Court of Chhattisgarh at Bilaspur in the month of November 2000. There he practiced in various branches of law. He was appointed as Additional Advocate General of Chhattisgarh in May 2003, which post he held till, February 2004. He thereafter started private practice till his elevation as permanent Judge of the High Court of Chhattisgarh on 1st December, 2004.
- Further, assumed office of the Chief Justice, as the Acting Chief Justice, Madras, High Court on 13.02.2014 and continued as such till 25th July, 2014. He was also the Chancellor of the National Law University, Trichi during this period. He was nominated Executive Chairman of the Tamil Nadu, State Legal Services Authority on 21st November, 2013 and continued thereon, till his transfer as Judge to the Sikkim High Court, wherein he assumed office on 23.05.2016 as first Puisne Judge of the Sikkim High Court.
- Hon'ble Mr. Justice Sunil Kumar Sinha was transferred to the High Court of Sikkim, where he assumed charge of the office of the Hon'ble Judge of the High Court of Sikkim in the forenoon of 14th July 2014.