- male, 87 years old
- George Blake (born Georg Behar, November 11, 1922) is a former Dutch-British spy who was actually a double agent for the Soviet Union. Born in...
- female, deceased (2005)
- Melita Norwood, née Sirnis was a British civil servant who, for a period of about 40 years following her recruitment in 1937, supplied the KGB (...
- male, deceased (1995)
- Morris Cohen a.k.a. in London as Peter Kroger (2 July 1910 - 23 June 1995), was born in New York. His father was from an area near Kiev in...
- male, deceased (1951)
- Jan Valtin was the alias of Richard Julius Hermann Krebs (December 17, 1905 - January 1, 1951), a German communist and Soviet agent during the...
- male, 103 years old
- Harry Houghton (1906-????) was a spy for the People's Republic of Poland and the USSR during the Cold War. He was part of the Portland Spy Ring.
- male
- Perseus was the codename of a possible Soviet spy alleged to have breached U.S. national security at Los Alamos during the Manhattan project. This...
- male
- Klaus Fuchs at Carey Sublette's NuclearWeaponArchive.org, which includes information about the specific information given by Fuchs to the Soviets...
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