Justice Narendra Kumar Jain was born on 8th October 1952 at Newai, District Tonk, Rajasthan. He completed his secondary school in the year 1969, Higher Secondary and Bachelors of Commerce (B.Com) in the year 1970 and 1973 respectively. Thereafter, he got the degree of Bachelors of Law (LL.B) in the year1977 from University of Delhi. Justice Jain then got himself enrolled with the Bar Council of Rajasthan on 28th May 1978 and started his legal practice directly in the Rajasthan High Court, Bench, at Jaipur.
He practiced on civil, criminal, misc and service writs, taxation, labour, company, service and revenue matters. In the High Court, he was the Standing Counsel/Panel Lawyer for Regional Provident Fund Commissioner, Income Tax Department, National Insurance Company, Jai Narayan Vyas University, Jodhpur and Medical and Health Department, Government of Rajasthan. He was also the Deputy government Advocate of Commercial Taxes Department, Government of Rajasthan in Sales Tax Tribunal at Jaipur.
He was elevated and took oath as a permanent judge of the High Court of Rajasthan on 2nd September 2004. He was nominated as the Administrative Judge on 21st November 2012. He was also the Acting Chief Justice of the High Court of Rajasthan. He also remained as the Executive Chairman of the Rajasthan State Legal Services Authority since 17th January 2013 till he was transferred from Rajasthan High Court to the High Court of Sikkim, where he assumed charge as a Judge of the High Court of Sikkim on 30.09.2013. On 02.10.2013. he assumed the charge of the office of the Chief Justice (Acting), High Court of Sikkim and thereafter he was Appointed and assumed charge of the Regular Chief Justice of High Court of Sikkim on 07.01.2014 and demitted the said office on his superannuation on 07th October, 2014. Thereafter, he was Appointed and he assumed the charge of the office of the Chairperson, Sikkim State Human Rights Commission, Gangtok for a period of five years.