Ajay Singh Chautala is a son of Om Prakash Chautala, a former Chief Minister of Haryana, and a grandson of Chaudhary Devi Lal, a former deputy prime minister of India. He has two sons Dushyant Chautala, incumbent deputy chief minister of haryana (youngest MP, Hisar Haryana 16th Lok Sabha) and Digvijay Chautala (national President N INSO). He did his B.A. from Kurukshetra University, M.A. (Public Administration) and LL.B. from Rajasthan University. He joined active politics in 1980s, became MLA from Rajasthan twice: first from Data Ram Garh (1989) and then from Nohar (1993).