- Historical Archives of the Hungarian State Security1
- Horak, Stephan M.1
- Houwer, Rob1
- Index on Censorship1
- Information Services Department1
- Institut marksizma-leninizma (Moscow, R.S.F.S.R.)1
- Jancsó, Miklós1
- Johnson, Chalmers1
- Joll, James1
- Jovanović, Soja1
- Judit, Miklósy1
- Kanapa, Jean1
- Kemény, István1
- Kennan, George F.1
- Kennedy, John F.1
- Khutsiyev, Marlen1
- Király, Béla1
- Kissinger, Henry1
- Kleiman, Robert1
- Klimov, Elem1