Jon Ronson is a British-American journalist, author, and filmmaker. He is known for works such as Them: Adventures with Extremists (2001), The Men Who Stare at Goats (2004), and The Psychopath Test (2011).

He has been described as a gonzo journalist, becoming a faux-naïf character in his stories. He produces informal but sceptical investigations of controversial fringe politics and science. He has published nine books and his work has appeared in publications such as The Guardian, City Life and Time Out. He has made several BBC Television documentary films and two documentary series for Channel 4.