| Ajit Seth | |
| Birth Place: | Uttar Pradesh, India |
| Birth Date: | 24 November 1951 |
| Office: | 30th Cabinet Secretary of India |
| Term Start: | 14 June 2011 |
| Term End: | 13 June 2015 |
| Primeminister: | Manmohan SinghNarendra Modi |
| Predecessor: | K. M. Chandrasekhar |
| Successor: | P. K. Sinha |
| Birthname: | Ajit Kumar Seth |
| Nationality: | Indian |
| Alma Mater: | St. Stephen's College, Delhi (BSc & MSc) JNU, Delhi (MPhil) University of Birmingham |
| Honorific Suffix: | IAS |
Ajit Kumar Seth (born 24 November 1951) is an Indian civil servant who was the 30th Cabinet Secretary of the Republic of India.[1] He is a 1974 batch Indian Administrative Service (IAS) officer from Uttar Pradesh Cadre. Upon retirement from the post of Cabinet Secretary, Ajit Kumar Seth was appointed as Chairman of Public Enterprises Selection Board (PESB).[2]
Seth was born in Uttar Pradesh. He earned Bachelor of Science and Master of Science in Chemistry from St. Stephen's College, Delhi and also MPhil in Life Sciences from the Jawaharlal Nehru University. He later earned a master's degree in Development Finance from the University of Birmingham.
Seth served as First Secretary in the Permanent Mission of India to the United Nations at Geneva.Earlier in the 1980s Shri Seth served in the Ministry of Commerce and he served for over 3 years as First Secretary in the Permanent Mission of India to the United Nations at Geneva, Switzerland.
While in the state in Uttar Pradesh, Shri Seth served as Principal Secretary (Rural Development), Principal Secretary (Vigilance) and Secretary (Home and Confidential) besides stints in Industries and Cooperatives Departments. He also served as Divisional Commissioner of Kumaon Division in Nainital and District Magistrate of Mainpuri and Lucknow districts.[3]
Seth was given 6 months extension, as Cabinet Secretary, by the Appointments Committee of the Cabinet, headed by Prime Minister Narendra Modi on 5 December 2014.[4]