Sadashivaiah, born on 15 November 1946, is a retired Indian Administrative Service officer from the 1984 Karnataka cadre. He holds a graduate degree and a postgraduate degree in Economics. Throughout his career, he served in various capacities including Secretary, Managing Director, Commissioner, Project Director, Director, Joint Commissioner, Chief Executive Officer, Deputy Commissioner, Deputy Secretary, Special Deputy Commissioner, Joint Director, Deputy Director, and Assistant Commissioner. His most recent position was Regional Commissioner at Bangalore, Karnataka, from 17 May 2006 to 30 November 2006.