Hon'ble Thiru Justice D.Krishnakumar was born to Thiru. A.P.Deivasigamani and Late Tmt.Saraswathi, at Dharapuram, on 22nd May, 1963. Did his schooling at Government Higher Secondary School, Dharapuram. Studied B.Sc., Degree at Presidency College, Chennai, and B.L. Degree at Madras Law College. Enrolled as an Advocate in the year 1987. After enrolment, joined the office of Mr.K.Duraiswamy, Senior Advocate in the Madras High Court. Served as a Government Advocate in the High Court from 1991 to 1996.
Served as Additional Central Government Standing Counsel from 1998-99 and Special Government Pleader from 2001 – 2006. Standing Counsel for Teachers' Recruitment Board besides several Municipalities including Coimbatore City Municipal Corporation, Indira Gandhi National Open University and other Government Undertakings. And, served as Special Government Pleader (Education) from 2013 till elevation. Had extensive practice in Civil, Criminal and Writ jurisdiction in the High Court. Appointed as a Permanent Judge of the High Court of Madras on 07.04.2016.