- Hildebrand, Antonio Von1
- Historical Archives of the Hungarian State Security1
- Holcomb, Rod1
- Holland, Luke1
- Hungarian Institute for Public Opinion Research1
- Ibrahim, Shirin1
- Jakab, Lajos1
- Judith Gimes1
- Kabay, Barna1
- Kaplan, Mark1
- Kaufmann, William W.1
- Kemény, István1
- Kennedy, Paul M.1
- Key, Rob1
- Kinoy, Peter1
- Kintner, William R.1
- Kirkov, Lyudmil1
- Kiss, Róbert1
- Kissinger, Henry1
- Kleider, Alexander1