- Ingram, Kenneth1
- International Labour Office1
- Johnson, Hewlett1
- Joint Committee on Slavic Studies (U.S.)1
- Jordan, Constantin1
- Joy, C. Turner1
- Judit, Miklósy1
- Kary-Niiazov, T. N.1
- Kelen, Jolán1
- Kemény, István1
- Kot, Stanisław1
- Kovács, Imre1
- Krska, Václav1
- Larsen, Otto Marinius1
- Leiling, Otto Heinrich1
- Leonhard, Wolfgang1
- Lermolo, Elizabeth1
- Library of Congress. Slavic and Central European Division1
- Lukinskii, Ivan1
- MacDuffie, Marshall1