Arun Kumar Yadav, born on 25 April 1963, is a retired Indian Administrative Service officer from the 1987 batch of the Sikkim cadre. He holds a B.Tech. in Electrical Engineering from IIT New Delhi and a PG Diploma in Public Administration from the Indian Institute of Public Administration. Throughout his career, he served in various capacities including Joint Secretary, Principal Secretary, Development Commissioner, Commissioner & Secretary, Managing Director, and Deputy Secretary. His most recent designation was Chief Administrative Advisor, a position he held from 31 August 2022 until retirement.