Daniele Ganser

Daniele Ganser (born 29 August 1972) is a Swiss author. He is described by Americanist Michael Butter as the "best-known conspiracy theorist in the German-speaking world". He is best known for his 2005 book NATO's Secret Armies: Operation GLADIO and Terrorism in Western Europe.

Ganser was a senior researcher at the ETH Zurich Center for Security Studies (CSS) and was president (2006–2012) of the Swiss branch of the Association for the Study of Peak Oil and Gas. He taught a course titled History and Future of Energy Systems at the University of St. Gallen from 2012 to 2017. His public doubts about the September 11 attacks led to the termination of his university employment.