This is a list of Soviet secret police officers and agents who have defected.
| -- Please alphabetize by last name! --> | ||||
|---|---|---|---|---|
| Name | Defection date | Country of defection | Comment | |
| Georgiy Sergeyevich Agabekov[1] | 1930 |  France | Disappeared around August 1937. Body never recovered | |
| Ignace Reiss | July 1937 |  Switzerland | Gunned down by an NKVD hit squad on 4 September 1938 | |
| Walter Germanovich Krivitskiy | October 1937 | France | Found dead in his hotel room on 10 February 1941 with a gunshot wound to the temple. Suspected foul play | |
| Genrikh Samoilovich Lyushkov | 1938 | Japan | Executed by Japan in 1945 to prevent his recapture by the Soviets | |
| Aleksandr Mikhailovich Orlov | 1938 |  Canada | Authenticity of defection disputed | |
| Lev Borisovich Helfand | 1940 |  Italy | ||
| Igor Grigoryevich Orlov | 1943 | Germany | Re-recruited as Soviet agent in 1949 | |
| Viktor Andreyevich Kravchenko | 1944 |  United States | Not an intelligence officer | |
| Anatoliy Mikhailovich Granovskiy | 1946 |  Sweden | ||
| Petr Sergeyevich Deryabin[2] | 1953 |  Austria | ||
| Nikolay Yevgenyevich Khokhlov | 1954 |  West Germany | Victim of thallium poisoning in 1957. Survived[3] | |
| Yuriy Aleksandrovich Rastvorov | 1954 |  Japan | ||
| Vladimir Mikhaylovich Petrov | 3 April 1954 |  Australia | Led to the Petrov Affair in Australia[4] | |
| Yevdokiya Alekseyevna Petrova | 19 April 1954 | Australia | Led to the Petrov Affair in Australia | |
| Reino Häyhänen | 1957 | France | Died in an automobile accident in 1961. Accident considered suspicious[5] | |
| Anatoliy Mikhailovich Golitsyn | 15 December 1961 |  Finland | ||
| Bohdan Mykolayovych Stashynsky | 1961 | West Berlin | ||
| Yuri Vasilevich Krotkov | 1963 | United Kingdom | KGB agent, not an officer | |
| Yuriy Ivanovich Nosenko[6] | January 1964 | Switzerland | Authenticity of defection disputed | |
| Yuriy Aleksandrovich Bezmenov[7] | 1970 | Canada | Intelligence agent, not an officer | |
| Sergey Nikolayevich Kourdakov | 4 September 1971 | Canada | Intelligence agent, not an officer | |
| Oleg Adolfovich Lyalin | 1971 |  United Kingdom | ||
| Imants Lešinskis[8] | 1978[9] | United States | ||
| Aleksei Alekseyevich Myagkov | 1974 | West Berlin | ||
| Stanislav Aleksandrovich Levchenko | 1979, October | Japan | ||
| Oleg Agraniants[10] | 1986 |  Tunisia | ||
| Ilya Grigoryevich Dzhirkvelov | 1980 | Switzerland | ||
| Viktor Ivanovich Sheymov[11] | 1980 | United States | ||
| Vladimir Anatolyevich Kuzichkin | 1982 | Iran | ||
| Oleg Antonovich Gordievsky | 19 July 1985 | United Kingdom | Suspected poisoning in 2007. Survived[12] | |
| Vitaly Sergeyevich Yurchenko | 1985 | Italy | Disputed (later returned to USSR) | |
| Igor Nikolayevich Cherpinskiy[13] | 1990 |  Belgium | ||
| Sergey Sergeyevich Illarionov[14] | 1992 | Italy | ||
| Vasiliy Nikitich Mitrokhin | 1992 |  Latvia | ||
| Viktor Alekseyevich Oshchenko[15] | July 1992 | United Kingdom | ||
| Aleksandr Nikolayevich Poteyev | 26 June 2010 | United States | KGB colonel, later SVR officer. Multiple assassination attempts[16] [17] [18] |