Nathan Hale was an American soldier, Patriot, and spy who worked for the Continental Army. He played an important role during the American Revolutionary War, volunteering for an intelligence-gathering mission. Nathan Hale was captured and executed by the British in 1776. Hale is regarded as an American hero for his important contribution during the American Revolutionary War.
John André was a British military leader who served as a major in the British Army. He played an important role during the American Revolutionary War, serving as the head of the British Army's Secret Service in America. He was executed by the Continental Army on 2 October 1780. John André's life inspired many artworks, including the 1798 play André.
E. Howard Hunt was an American author and intelligence officer. He is best remembered for his service in the Central Intelligence Agency from 1949 to 1970, during which he served as an officer. E. Howard Hunt was part of the White House Special Investigations Unit during the presidency of Richard Nixon.
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.
Clyde Tolson was an American associate director of the FBI from 1930 to 1972. He is perhaps best remembered for his relationship with FBI Director J. Edgar Hoover; it has been speculated that Clyde Tolson shared an intimate relationship with Hoover.
![Ethel Rosenberg Ethel Rosenberg](http://www.thefamouspeople.com/profiles/thumbs/ethel-rosenberg-74647-1.jpg)
Ethel Rosenberg was an American citizen who was convicted along with Julius Rosenberg of spying in favor of the Soviet Union. Ethel and Julius were convicted of passing top-secret information about sonar, radar, valuable nuclear weapon designs, and jet propulsion engines to the Soviet Union. Julius and Ethel Rosenberg were executed by the American government in 1953.
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.
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.
![Violette Szabo Violette Szabo](http://www.thefamouspeople.com/profiles/thumbs/violette-szabo-1.jpg)
Violette Szabo was a British-French spy who worked as a Special Operations Executive agent during World War II. During her second mission in occupied France, Violette Szabo was captured by the Germans. She was tortured, interrogated, and deported to Ravensbrück, where she was executed on 5 February 1945 at the age of 23.
Manuela Sáenz was an Ecuadorian revolutionary who supported women's rights. She received the Order of the Sun, honoring her services in the revolution. Today, she is widely regarded as a feminist symbol of the 19th century. In 2007, the Ecuadorian government honored her with the rank of General.
Peggy Shippen was a spy who was active during the American Revolution. She was the highest-paid spy and worked alongside her husband General Benedict Arnold, who started conspiring with the British in the late-1770s. Peggy Shippen's role in the conspiracy was exposed in September 1780, when British Major John André was captured by the Americans.
![Sidney Gottlieb Sidney Gottlieb](http://www.thefamouspeople.com/profiles/thumbs/sidney-gottlieb.jpg)
Sidney Gottlieb was an American spymaster and chemist who played a major role in the CIA's mind-control program and assassination attempts during the 1950s and 1960s; the illegal human experimentation program which he headed was called Project MKUltra.
![Savitri Devi Savitri Devi](http://www.thefamouspeople.com/profiles/thumbs/savitri-devi-52290-1.jpg)
Born in Lyon, Frenchwoman Maximiani Julia Portas later changed her name to Savitri Devi and adopted Nazism. The ardent cat lover earned a PhD in philosophy and later acquired Greek nationality and served as an Axis spy. She claimed Adolf Hitler was an avatar of the Hindu god Vishnu.
![John Cairncross John Cairncross](http://www.thefamouspeople.com/profiles/thumbs/john-cairncross-1.jpg)
British civil servant John Cairncross is remembered in history as one of the 5 men of the Cambridge spy ring who served as Soviet spies. He had to give up his civil service job amid accusations of him being a Soviet spy. He later began an academic career, teaching at Northwestern University.
![Donald Maclean Donald Maclean](http://www.thefamouspeople.com/profiles/thumbs/donald-maclean-1.jpg)
While he was a member of the British Foreign Office, diplomat Donald Maclean was also simultaneously spying for the Soviet Union as part of the Cambridge Five, supplying them confidential information. He eventually vanished from England and reappeared as a Communist in the Soviet Union, years later.
![Krystyna Skarbek Krystyna Skarbek](http://www.thefamouspeople.com/profiles/thumbs/krystyna-skarbek-98255-1.jpg)
The first and the longest-serving British female secret agent, Krystyna Skarbek was born in Poland. Her contribution to the Allies during World War II won her honors such as the OBE and the Croix de Guerre. She was 37 when she was stabbed to death in a London hotel.
Richard Sorge was a German journalist and Soviet military intelligence officer. He was active before and during the Second World War. He worked undercover in both Nazi Germany and the Empire of Japan under the codename, "Ramsay." He was arrested, tortured, and hanged in 1944. In 1964, he was posthumously awarded the title of Hero of the Soviet Union.
![Chevalier d'Éon Chevalier d'Éon](http://www.thefamouspeople.com/profiles/thumbs/chevalier-don-1.jpg)
Chevalier d'Éon not just fought for France in the Seven Years' War but was also a spy. Interestingly, he led the first half of his life as a man and the second half as a woman. In his unpublished memoir, he claimed he was a woman raised as a man.
![Theodore Hall Theodore Hall](http://www.thefamouspeople.com/profiles/thumbs/theodore-hall-1.jpg)
Theodore Hall was an American physicist. He was one of the atomic spies for the Soviet Union during World War II. Hall gave a detailed description of a plutonium bomb named Fat Man to the Soviet Union. He also passed on vital information such as the processes involved for purifying plutonium. His life inspired a documentary titled A Compassionate Spy.
![Markus Wolf Markus Wolf](http://www.thefamouspeople.com/profiles/thumbs/markus-wolf-1.jpg)
Markus Wolf was a German intelligence officer best remembered for his service as the chief of the Main Directorate for Reconnaissance. He played an important role during the Cold War and is often counted among the most popular spymasters during the war. Thanks to his elusiveness, Markus Wolf was nicknamed the man without a face in the West.
![Duško Popov Duško Popov](http://www.thefamouspeople.com/profiles/thumbs/duko-popov-1.jpg)
James Armistead Lafayette was an enslaved African American. He is best remembered for his service in the Continental Army during the famous American Revolutionary War, where he worked under the command of a French aristocrat and military officer named Lafayette. He worked as a double agent, feeding the British with wrong information and disclosing accurate information to the Americans.
![David Greenglass David Greenglass](http://www.thefamouspeople.com/profiles/thumbs/david-greenglass-1.jpg)
David Greenglass was an atomic spy who worked for the Soviet Union. He was part of the Manhattan Project and was also stationed at the Clinton Engineer Works, a uranium enrichment facility in Tennessee. David Greenglass' testimony helped convict his brother-in-law Julius and his sister Ethel Rosenberg.
![Konon Molody Konon Molody](http://www.thefamouspeople.com/profiles/thumbs/konon-molody-1.jpg)
![Noshir Gowadia Noshir Gowadia](http://www.thefamouspeople.com/profiles/thumbs/noshir-gowadia-117953-1.jpg)
Noshir Gowadia is a former design engineer. A convicted spy for several countries, Gowadia was indicted for selling classified information to individuals in Switzerland, Germany, and Israel and to China. Noshir Gowadia received a 32-year prison sentence in 2011.
![Frank Sturgis Frank Sturgis](http://www.thefamouspeople.com/profiles/thumbs/frank-sturgis-117343-1.jpg)
Frank Sturgis was an American spy who worked as an undercover agent for the Central Intelligence Agency. He was counted among the five Watergate burglars whose arrest led to the end of Richard Nixon's presidency. Frank Sturgis served in multiple branches of the US military. He also served in the Cuban Revolution of 1958.
![William Stephenson William Stephenson](http://www.thefamouspeople.com/profiles/thumbs/william-stephenson-1.jpg)
![Edwin P. Wilson Edwin P. Wilson](http://www.thefamouspeople.com/profiles/thumbs/no-profile-img.jpg)
Edwin P. Wilson was a former CIA officer who was convicted of illegally selling weapons to Libya in 1983. He also served as an officer in the Office of Naval Intelligence before his conviction. However, his convictions were overturned in 2003 and Edwin P. Wilson was freed in 2004.
![Ursula Kuczynski Ursula Kuczynski](http://www.thefamouspeople.com/profiles/thumbs/ursula-kuczynski-1.jpg)
Ursula Kuczynski was a German Communist activist. She is best remembered for her work as a spy for the Soviet Union. She coordinated with Klaus Fuchs, a German atomic spy, who started passing information on the British atomic bomb project through Ursula Kuczynski to the Soviet Union.
![Ferdinand Walsin Esterhazy Ferdinand Walsin Esterhazy](http://www.thefamouspeople.com/profiles/thumbs/ferdinand-walsin-esterhazy-17091-1.jpg)
![Theodore Schurch Theodore Schurch](http://www.thefamouspeople.com/profiles/thumbs/no-profile-img.jpg)
Theodore Schurch was a British soldier who was captured and executed under the Treachery Act 1940 after World War II. Theodore Schurch became the only British soldier to be executed for treachery during the war. He was also the last British person to be executed for an offence other than homicide.
![Luis Posada Carriles Luis Posada Carriles](http://www.thefamouspeople.com/profiles/thumbs/luis-posada-carriles-78751-1.jpg)
Belle Boyd was a Confederate spy who was active during the American Civil War. Operating from her father's hotel in Virginia, Boyd provided key information to Confederate Commander Stonewall Jackson in 1862. Belle Boyd's life and career inspired a series of silent films called The Girl Spy.
![Peter Wright Peter Wright](http://www.thefamouspeople.com/profiles/thumbs/no-profile-img.jpg)
Peter Wright was the longest-serving scientist associated with Britain’s counter-intelligence service, MI5. He soared to fame with his international bestseller, Spycatcher, co-written with author Paul Greengrass, which exposed some major flaws of the MI5. He spent his final years in Australia and also became an Australian citizen.
![Josef Jakobs Josef Jakobs](http://www.thefamouspeople.com/profiles/thumbs/josef-jakobs.jpg)
Josef Jakobs was a German spy who was caught by the United Kingdom during World War II. He was caught after parachuting into the UK and was sentenced to death. On 15 August 1941, Josef Jakobs was put before a firing squad at the Tower of London, making him the last person to be executed at the famous site.
![Tamara Bunke Tamara Bunke](http://www.thefamouspeople.com/profiles/thumbs/tamara-bunke-121374-1.jpg)
Tamara Bunke was an Argentine-born East German spy and revolutionary. She played an important role in the Cuban government and in various revolutionary movements across Latin America. She also fought during the Bolivian insurgency and was killed in an ambush by Bolivian Army Rangers while fighting alongside communist guerrillas led by Che Guevara.
![Elizabeth Van Lew Elizabeth Van Lew](http://www.thefamouspeople.com/profiles/thumbs/elizabeth-van-lew-1.jpg)
American abolitionist Elizabeth Van Lew is best-known for developing and running an extensive and efficient spy-ring for Union Army during American Civil War. She was the first person in Richmond who raised the US flag in the city after it fell to US forces in April 1865. She later served as Postmaster General of Richmond and modernized the city's postal-system.
![Miles Copeland, Jr. Miles Copeland, Jr.](http://www.thefamouspeople.com/profiles/thumbs/miles-copeland-jr--1.jpg)
Miles Copeland, Jr. was an American businessman, musician, and Central Intelligence Agency officer. He is remembered for his close friendship with Gamal Abdel Nasser and his famous books on intelligence. Miles Copeland, Jr. played important role in the March 1949 Syrian coup d'état as well as in the 28 Mordad coup d'état, participating in many covert operations in the process.
![Violette Morris Violette Morris](http://www.thefamouspeople.com/profiles/thumbs/violette-morris-1.jpg)
![John Vassall John Vassall](http://www.thefamouspeople.com/profiles/thumbs/john-vassall-1.jpg)
British civil servant John Vassall became a Soviet spy after facing blackmail from the KGB, which threatened to reveal his homosexuality. Initially a war photographer for the RAF, he later assisted the British naval attaché in Moscow. Released after a 10-year imprisonment for his crimes, he changed his surname and settled in London.
![Rose O'Neal Greenhow Rose O'Neal Greenhow](http://www.thefamouspeople.com/profiles/thumbs/rose-oneal-greenhow-117469-1.jpg)
Rose O'Neal Greenhow was a well-known Confederate spy who was active during the American Civil War. She is credited with securing the South's victory at the Battle of First Manassas in July 1861. After her demise, Rose O'Neal Greenhow was given a Confederate military funeral.
John Gardner was an English spy and author. He is best remembered for his thriller novels, including the continuation novels containing Ian Fleming's iconic character James Bond and Sir Arthur Conan Doyle's villain Professor James Moriarty. John Gardner wrote over 50 works of fiction, including 14 original James Bond novels.
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.
![Nancy Hart Nancy Hart](http://www.thefamouspeople.com/profiles/thumbs/nancy-hart-1.jpg)
Legendary heroine of the American Revolutionary War, Nancy Hart was a skilled frontierswoman and herbalist from Georgia. Folklore has it that she was a 6-feet tall, muscular, red-headed woman, known as “war woman” to the locals. She is said to have fought and spied dressed as a man.
![Sarah Emma Edmonds Sarah Emma Edmonds](http://www.thefamouspeople.com/profiles/thumbs/sarah-emma-edmonds-26614-1.jpg)
Canadian-born Sarah Emma Edmonds is best-remembered as the woman who served the Union Army, disguised as a man, during American Civil War. She also claimed that she served as a spy. She later used her real identity and served as a nurse at a hospital in Washington, D.C. In 1897, Edmonds was admitted to the Grand Army of the Republic.