- Khutsiyev, Marlen1
- King-Hall, Stephen1
- Király, Béla1
- Kliuchevskii, V. O.1
- Koch, Pitt1
- Koeppen, Wolfgang1
- Kommunisticheskaia partiia Sovetskogo Soiuza. Ul'ianovskii oblastnoi komitet. Partiinyi arkhiv1
- Kosiński, Bohdan1
- Kovács, Ferenc1
- Kowalik, Jan1
- Krassó, György1
- Kryvelev, Iosif Aronovich1
- Kucharzewski, Jan1
- Kursanov, Georgii Alekseevich1
- Kállai, Gyula1
- Landau, Rom1
- Laqueur, Walter1
- Lašauri, Mindia1
- Lebedenko, A.1
- Leningradskaia oblast' (Russia). Upravlenie vnutrennikh del. Arkhivnyi otdel1