Fond No. K-1, Lietuvos TSR Valstybės Saugumo Komitetas (Committee of State Security of the Lithuanian Soviet Socialist Republic, LSSR KGB) records 1926-1991
Opis 2, Records of the Counterintelligence Department of the NKVD-MGB-KGB of the LSSR 1941-1955
Opis 3, Records of the Structural Divisions for Struggle against Lithuanian Nationalistic Underground and Counterintelligence Divisions of the NKVD-KGB of the LSSR 1940-1985
Opis 10, Records of the Secretariat of the NKGB-MGB-KGB of the LSSR 1940-1991
Opis 14, Records of City Departments of the NKGB-KGB of the LSSR 1944-1987
Opis 45, Permanent records management files, NKVD-NKGB-MGB-KGB of the LSSR 1926-1991
Fond No. K-15, Records of the 10th Department of the Committee of State Security (KGB) of the Lithuanian SSR 1940-1991
Opis 2, Copies of documents on execution of death penalties 1944-1947
Fond No. K-16, Records of the Inspectorate under the Chair of the Committee of State Security (KGB) of the Lithuanian SSR
Opis 1, Files relating to the activities [of the Inspectorate] 1946-1958
Fond No. K-17, Records of the Pretrial Detention Center of the Committee of State Security (KGB) of the Lithuanian SSR
Opis 1, Office records 1944-1991
Opis 2, Prisoners' personal files 1944-1990
Fond No. K-19, Records of oblast level Directorates of the Ministry of State Security (MGB) of the Lithuanian SSR
Opis 1, Files relating to the activities [of the oblast level directorates] 1949-1953
Fond No. K-20, Records of the Fourth Department of the Ministry of State Security (MGB) of the Lithuanian SS
Opis 1, Files relating to the activities [of the Fourth Department] 1943-1953
Fond No. K-21, Records of the Operative Departments of the SSSR Ministry of Internal Affairs (MVD) and the Ministry of State Security (MGB)
Opis 1, Files relating to the activities [of the Operative Departments] 1943-1953
Fond No. K-22, Records of the Special Department of the SSSR People's Commissariat of Internal Affairs (NKVD) of the 29th Rifle Corps of the Baltic Military District (Okrug)
Opis 1, Files relating to the activities [of the Special Department] 1940-1941
Fond No. K-23, Records of the Republican Commission of the Committee of State Security (KGB) of the Lithuanian SSR for Revision of Criminal Cases of Persons Kept in Camps, Colonies, and Prisons of the SSSR MVD or in Exile in Special Settlements for Counterrevolutionary Crime
Opis 1, Files relating to the activities [of the Republican Commission] 1949-1953
Fond No. K-26, Records of the KGB (Committee of State Security) Department under the SSSR Council of Ministers on the Lithuanian Railway
Opis 1, Files relating to the activities [of the Department] 1944-1960
Fond No. K-27, Records of School Number 303 of the Committee of State Security (KGB) under the SSSR Council of Ministers
Opis 1, Files relating to the activities [of the School] 1946-1960
Fond No. K-31, Records of the General Service Department of the Committee of State Security (KGB) of the Lithuanian SSR
Opis 1, Files relating to the activities [of the General Service Department] 1945-1959
Fond No. K-40, Records of the Investigative Department of the Committee of State Security (KGB) of the Lithuanian SSR, 1944–1991
Opis 1, Files Relating to the Activities of the Department, 1944-1985
Opis 2, Files Relating to the Activities of the Department, 1940–1989 1940–1989
Fond No. K-42, Records of the Personnel Department of the Committee of State Security (KGB) of the Lithuanian SSR 1941-1990 1941-1990
Opis 1, Files relating to the activities [of the Personnel Department Of the KGB of the Lithuanian SSR] 1962-1988
Opis 2, Files relating to the activities [of the Personnel Department Of the KGB of the Lithuanian SSR] 1941-1990 1941-1990