#1 Sidney Reilly

#2 Kim Philby

#3 Aldrich Ames

#4 Rudolf Abel

#5 Mata Hari

#6 Robert Hanssen

#7 Julius Rosenberg

#8 Richard Sorge

#9 John Walker

Abel, Rudolf
Notorious Soviet Cold War spy.

Fuchs, Klaus
German-born British theoretical physicist and atomic spy.

Pelton, Ronald
American spy convictedof passing NSA secrets to teh KGB.

Ames, Aldrich
CIA counter-intelligence officer convicted of spying for the Soviet Union

Gouzenko, Igor
Soviet cipher clerk who defected to Canada, turning over Soviet secrets.

Penkovsky, Oleg
Soviet colonel who exposed the existence of Soviet missiles in Cuba.

Angleton, James
Head of CIA counter-intelligence and noted mole-hunter.

Granville, Christine
Polish-born BritishSOE known for her daring exploits in intelligence and sabotage missions.

Philby, Kim
High-ranking member of British intelligence offical who worked as a spy for the Soviet Union.

Baker, Josephine
American-born entertainer who spied for France against the Nazis.

Hall, Ted
American physicist and an atomic spy for the Soviet Union

Pollard, Jonathan
American Naval Intelligence analyst who spied for Israel.

Beria, Lavrentiy
Chief of the NKVD and the head of the great Soviet purge.

Hanssen, Robert
American FBI agent who passed information to Soviet intelligence.

Rado, Sandor
Hungarian cartographer who spied on the Nazis for the Soviet Union.

Blake, George
British spy who worked as a double-agent for the Soviet Union.

Hari, Mata
A Dutch exotic dancer who worked as a double-agent for France and Germany.

Redl, Alfred
Austrian head of counter-intelligence blackmailed by Russia into passing secrets.

Blunt, Anthony
Noted British art historian who acted as a Soviet recruitor.

Hiss, Alger
U.S. State Department official accused of espionage.

Reilly, Sidney
Russian-born British spyknown for his daring exploits.

Cairncross, John
British intelligence officer who passed secrets to the Soviet union.

Hollis, Roger
Director General of MI5 who was later accused of being a Soviet agent.

Richer, Marthe
A former prostitute who spied for France against Germany.

Chambers, Whittaker
American-born Soviet spy who exposed Alger Hiss as a spy.

Inayat Khan, Noor
British SOE agent who worked with the French Resistance.

Roessler, Rudolf
Head of a Soviet espionage ring that spied on Germany.

Childs, Morris
An America-born Soviet spy who later became a double agent working for the United States.

Kell, Vernon
First Director General of the British Security Service (MI5).

Rosenberg, Ethel
American communist executed for espionage against the United States.

Cohen, Morris "Two-Gun"
London-born adventurer who arranged counter-intelligence for China.

Kuczynski, Ruth
German-born Soviet spy who operated a spy ring in China.

Rosenberg, Julius
American-born Soviet recruiter and atomic spy.

Coplon, Judith
American-born Soviet agent who passed information about American counter-intelligence.

Lody, Carl
German soldier who spied on England during World War I.

Smedley, Agnes
American journalist who spied for Russia against Japan.

Crabb, Lionel "Buster"
British Royal Navy diver assigned to missions against the Soviet Union.

Lonetree, Clayton
A United States Marine coerced into passing secrets to the Soviet Union.

Sorge, Richard
Soviet master spywho ran a spy ring against Japan.

Dickinson, Velvalee
American businesswoman who passed U.S. Naal secrets to the Japanese.

Lonsdale, Gordon
Soviet intelligence officer who headed a spy ring in the U.S.

Szabo, Violette
Frenc-born SOE operative who reconstituted a French Resistence network.

Drummond, Nelson
U.S. Naval clerk coerced into turning over secret documents to the Soviets.

Maclean, Donald
British diplomat who became a spy for the Soviet Union.

Von Papen, Franz
German spymaster assigned to disrupt U.S. - British communications.

Dukes, Paul
MI6 officer assigned to spy on Russia utilizing assorted disguises.

May, Allan
British physicist who passed atomic secrets to the Soviet Union.

Walker, John
U.S. military communications specialist who created a spy ring to pass intelligence to the Soviets.

Dzerzhinsky, Feliks
Head of the Bolshevik Secret Police, the CHEKA.

Oster, Hans
German Army general who built a resistence organization against the Nazis.

Yardley, Herbert
American cryptologist who wrote the expose "The American Black Chamber."