| Honorific Prefix: | Lieutenant General |
| Jai Singh Nain | |
| Honorific Suffix: | PVSM,AVSM, SM |
| Serviceyears: | 18 June 1983 – 31 October 2022 |
| Rank: | Lieutenant General |
| Servicenumber: | IC-41067N |
| Commands: | Southern Army 9 Corps |
| Awards: | Param Vishisht Seva Medal Ati Vishisht Seva Medal Sena Medal |
Lieutenant General Jai Singh Nain PVSM, AVSM, SM, ADC is a former General Officer-Commanding-in-Chief (GOC-in-C) Southern Command of the Indian Army. He assumed the post from Lieutenant-General Chandi Prasad Mohanty.He had his schooling from the Sainik School, Kunjpura
Nain was commissioned into the 2nd battalion of the Dogra Regiment in June 1983.[1] He is a graduate of the Defence Services Staff College, Wellington, the College of Defence Management, Secunderabad and the National Defence College (Bangladesh).[2]
Nain has served as a United Nations military observer with the UN mission in Iraq and Kuwait.[2] He is the alumnus of Sainik School Kunjpura, Karnal Haryana. and belongs to 62nd course Hunter Squadron of National Defence Academy Khadakwasla Pune
| Param Vishisht Seva Medal | Ati Vishisht Seva Medal | Sena Medal | ||
| Special Service Medal | Siachen Glacier Medal | Operation Vijay Medal | Operation Parakram Medal | |
| Sainya Seva Medal | High Altitude Service Medal | Videsh Seva Medal | 50th Anniversary of Independence Medal | |
| 30 Years Long Service Medal | 20 Years Long Service Medal | 9 Years Long Service Medal | UNIKOM | |
| Insignia | Rank | Component | Date of rank |
|---|---|---|---|
| 18 June 1983[3] | |||
| Indian Army | 18 June 1985[4] | ||
| Indian Army | 18 June 1988[5] | ||
| Indian Army | 18 June 1994[6] | ||
| Indian Army | 16 December 2004[7] | ||
| Indian Army | 15 March 2006[8] | ||
| Indian Army | 9 August 2010 (substantive, with seniority from 14 August 2009)[9] | ||
| Indian Army | 18 November 2015 (seniority from 23 August 2014)[10] | ||
| Indian Army | 23 February 2018[11] | ||