- Hinsley, F. H.1
- Hirschfeld, Herbert1
- Historical Archives of the Hungarian State Security1
- Ignatonis, Jeronimas1
- Ind, Allison1
- Index on Censorship1
- Information Services Department1
- Institut russkogo iazyka (Akademiia nauk SSSR)1
- Jancsó, Miklós1
- Jasienica, Paweł1
- Jedlicki, Witold1
- Judit, Miklósy1
- Kamiński, Aleksander1
- Kemény, István1
- Khrushchev, Nikita Sergeevich1
- King, Edmund James1
- Kirschen, Leonard1
- Király, Béla1
- Kluge, Alexander1
- Konarski, Szymon1