Glyn Conrad Davis AC (born 25 July 1959) is an Australian academic who is the Secretary of the Department of Prime Minister and Cabinet, appointed by Prime Minister Anthony Albanese on 30 May 2022, and commenced on 6 June 2022. Davis was previously a Distinguished Professor at the Australian National University's Crawford School of Public Policy. From January 2005 until September 2018, he served as the Vice-Chancellor of the University of Melbourne.