- Hegedüs, András1
- Henderson, John William1
- Herz, Martin Florian1
- Historical Archives of the Hungarian State Security1
- Historický ústav Ceskoslovenská akademie ved1
- Holborn, Hajo1
- Hollós, Ervin1
- Horne, Alistair1
- Hough, Jerry F.1
- Huberman, Leo1
- Hungarian Institute for Public Opinion Research1
- Index on Censorship1
- Information Services Department1
- Institut zur Erforschung der UdSSR1
- International Helsinki Federation for Human Rights1
- Jacobs, Jane1
- Jakobson, Max1
- Jones, Robert Huhn1
- Joshua, Wynfred1
- Judit, Miklósy1