- Historical Archives of the Hungarian State Security1
- Hitchcock, Alfred1
- Hungary. Legfelsőbb Bíróság1
- Hutheesing, Raja1
- Information Services Department1
- Institut zur Erforschung der UdSSR. Institute Conference1
- Ivanov-Razumnik1
- Ivask, IUrii P.1
- Jouvenel, Renaud de1
- Judit, Miklósy1
- Just, Artur W.1
- Jóźwiak, Franciszek1
- Kemény, István1
- King-Hall, Stephen1
- Kirk, Lydia1
- Kolarz, Walter1
- Krypton, Constantine1
- Kunina, Valeriâ Èmmanuilovna1
- Langer, Paul Fritz1
- Leites, Nathan1