- Kheifets, Aleksandr Naumovich1
- Kieser, Georges1
- King-Hall, Stephen1
- Kolkowicz, Roman1
- Kot, Stanisław1
- Krivitskii, Aleksandr IUrʹevich1
- Krivitsky, W. G.1
- Kull, Steven1
- Kulski, Władysław Wszebór1
- LaFeber, Walter1
- Labin, Suzanne1
- Larrabee, F. Stephen1
- Larson, Thomas B.1
- Latysh, M. V.1
- Lehrman, Harold Arthur1
- Leonhard, Wolfgang1
- Library of Congress. Congressional Research Service. Senior Specialists Division1
- Linke, Horst Günther1
- Litvinov, M. M.1
- Lochtin, Stefan1