Ian Fleming was a British writer, naval intelligence officer, and journalist. Fleming is credited with creating one of the most popular characters of all time, James Bond. His James Bond series of novels have sold more than 100 million copies, making them one of the best-selling fictional book series in history. Jamaica’s Ian Fleming International Airport is named after him.
Robert Hanssen is a former FBI agent who was convicted of spying against the U.S., for the Russian intelligence agencies. Hanssen reportedly sold countless classified documents containing U.S. nuclear and military strategies. He pleaded guilty to avoid the death penalty. He eventually received 15 life sentences, without parole.
British intelligence officer Kim Philby was also a Soviet double agent. He was part of the spy group known as the Cambridge Five and leaked classified information to the Soviet Union during World War II and the Cold War. He later defected to Moscow and spent his final years there.
Aldrich Ames is a former CIA officer who later became a KGB double agent. He was convicted of spying and is currently serving a life sentence. He allegedly worked as a Soviet spy and revealed classified CIA data. He inspired the 1998 film Aldrich Ames: Traitor Within.
10 Daniel Defoe
11 John André
12 Nathan Hale
13 Anna Chapman
Anna Chapman is a Russian intelligence agent, media personality, and model. In 2010, she was arrested in US as part of the Illegals Program spy ring. She was later deported to Russia as part of a prisoner swap. Since her return, she has hosted TV shows, worked as a catwalk model, and served as the head of a youth council.
15 Tony Mendez
16 Clyde Tolson
Noor Inayat Khan was a British spy who served in a secret British World War II organization called Special Operations Executive (SOE) during the war. She was also the first female radio operator to be sent into occupied France from the UK to aid the French Resistance. She was subsequently caught and executed at a Nazi concentration camp.
18 Klaus Fuchs
German theoretical physicist Klaus Fuchs worked on many significant theoretical calculations relating to the first nuclear weapons. He was also an atomic spy who provided information about nuclear weapons production to the Soviet Union during World War II. He was convicted and jailed for nine years, following which he resumed his career as a physicist.
Ramón Mercader was a Spanish NKVD agent and communist who killed Russian revolutionary Leon Trotsky with an ice axe in August 1940. He was sentenced to 20 years in prison and was honored with the title of Hero of the Soviet Union post his release in 1961. Over the years, Ramón Mercader has been the subject of many documentaries.
30 Josef Jakobs
31 Belle Boyd
32 Peter Wright
34 Konon Molody
36 John Vassall
38 George Koval
American chemical engineer George Koval was one of the most significant Soviet spies of the 20th century. Born to Belarusian immigrants in Iowa, Koval later moved to Russia with his family. Codenamed Delmar, he later worked in the U.S. atomic laboratories and supplied classified information to Russia.
British physicist Alan Nunn May went down in history as a traitor who betrayed Britain and the U.S. by passing on confidential information about the Manhattan Project, or the development of the atom bomb, to the Soviet Union, as a spy. Sentenced to 10 years of hard labor, he served 6.