Brigadier Adrian Stuart d'Hagé AM, MC, is a retired Australian military officer and a novelist. He was born in Sydney and educated at North Sydney Boys High School and the Royal Military College Duntroon (Applied Science). He graduated into the Intelligence Corps in 1967, and was later transferred to Infantry and served in Vietnam as a platoon commander, where he was awarded the Military Cross. His service in the Australian Army included command of an infantry battalion and Director of Joint Operations for Defence. In 1980 he was awarded the National Medal. In 1990 he was promoted to Brigadier as Head of Defence Public Relations.
In 1993 d'Hagé was made a Member of the Order of Australia in recognition of service to the Army and the Defence Force in the fields of operational planning and public information. His last appointment was Head of Defence Planning for security of the Sydney 2000 Olympics, including defence against chemical, biological, radiological and nuclear threats. (CBRN)
In October 2000 d'Hagé left the Army to pursue a writing career, moving to Italy to complete The Omega Scroll, a fictional thriller centred on the Catholic Church. He holds an honours degree in theology, entering his studies as a committed Christian and graduating 'of no fixed religion'. D'Hagé is currently a research scholar at the Centre for Arab and Islamic Studies (Middle East and Central Asia) at the Australian National University, and is also completing a further degree in Wine Science.
- The Omega Scroll (2006) 
- The Beijing Conspiracy (2008) 
- The Maya Codex (2011) 
- The Inca Prophecy (2012) 
- Military Cross, 22 May 1970, itsanhonour.gov.au
- National Medal, 22 August 1980, itsanhonour.gov.au
- Biography, 19 July 2006, penguin.com.au
- Member of the Order of Australia, 13 June 1993, itsanhonour.gov.au
- The Omega Scroll, published 31 July 2006, penguin.com.au
- The Beijing Conspiracy, published 7 April 2008, penguin.com.au
- The Maya Codex
- The Inca Prophecy