Chief of Navy
Vice Admiral Mark Hammond
Vice Admiral Hammond assumed command as Chief of Navy on 7 July 2022.
Chief of Army
Lieutenant General Simon Stuart, AO, DSC
Lieutenant General Stuart assumed command of the Australian Army on 2 July 2022.
Chief Defence Scientist
Professor Tanya Monro
Professor Monro commenced as Australia's Chief Defence Scientist in March 2019.
Chief Information Officer
Mr Justin Keefe
Mr Keefe commenced as acting Chief Information Officer (CIO) in February 2023.
Chief Nuclear-Powered Submarine Task Force
Vice Admiral Jonathan Mead, AO RAN
Vice Admiral Mead was selected as the Chief of the Nuclear Powered Submarine Task Force in September 2021.
Chief of Defence Intelligence
Lieutenant General Gavan Reynolds AO
Lieutenant General Reynolds was appointed as Chief of Defence Intelligence on 1 July 2020.
Chief of Joint Capabilities
Lieutenant General John Frewen, DSC, AM
Lieutenant General Frewen was appointed as Chief of Joint Capabilities in September 2021.
Chief of Joint Operations
Lieutenant General Greg Bilton, AO, CSC
Lieutenant General Bilton was appointed as Chief of Joint Operations in June 2019.
Deputy Secretary Capability Acquisition and Sustainment
Mr Chris Deeble AO, CSC
Mr Deeble was appointed Deputy Secretary CASG in August 2022.
Deputy Secretary Defence People
Ms Justine Greig
Ms Greig was appointed to the role of Deputy Secretary Defence People in June 2018.
Deputy Secretary National Naval Shipbuilding
Mr Tony Dalton
Mr Dalton is responsible for National Naval Shipbuilding in Defence.
Deputy Secretary Security and Estate
Ms Celia Perkins
Ms Perkins was appointed as Deputy Secretary of Security and Estate in December 2021.