| Office: | Governor of Assam |
| Predecessor: | Arvind Dave |
| Successor: | Shiv Charan Mathur |
| Term: | 5 June 2003 – 4 July 2008 |
| Birth Date: | 20 November 1934 |
| Birth Place: | Kotah State, British Raj |
| Alma Mater: | University of Madras |
| 1Blankname: | Chief Minister |
| 1Namedata: | Tarun Gogoi |
Lieutenant General Ajai Singh PVSM, AVSM (20 November 1934 – 18 April 2023) was a general officer of the Indian Army Armoured Corps and an administrator, serving as the Governor of Assam from 2003 to 2008, and as the chairman of the North Eastern Council (NEC).[1]
Ajai Singh was born on 20 November 1934 to a farmer's family in Kunadi of erstwhile Kotah State in Rajasthan.[2] He studied at Mayo College, Ajmer and Madras University. After studies, he joined the Indian Army and was commissioned into the Poona Horse.[3] He saw action in the Indo-Pakistani wars of 1965 and 1971. He was a gunnery expert and was actively involved in tank development both during his service years and post-retirement tenure in the Defence Research and Development Organisation. He was involved in the up-gunning of T- 54 tanks and the development of the Arjun main battle tank.[2]
Singh attended Tank Commanders Course in Czechoslovakia in the year 1966, Defence Services Staff Course in Wellington in 1972, Higher Command Course at College of Combat at Mhow from 1979 to 1980, Royal College of Defence Studies in London (UK) in 1983, and discussions at RAND Corporation in the USA in 1983 and 1989.[2] [4]
Singh died on 18 April 2023, at the age of 88.[5]