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- Király, Béla K.2
- Kleiner, Michael2
- Kohn, Hans2
- Kovács, László2
- Kozyrev, Andrei2
- Krafft, Karl E.2
- Kropotkin, Petr Alekseevich2
- Kushev, Evgenii2
- Kővágó, József, 1913-2
- LaRoche S., George2
- Lanz-Liebenfels, Jörg2
- Lauder, Ronald2
- Le Carré, John2
- Levi, Primo2
- List, Guido2
- Lodge, Henry Cabot, 1902-19852
- Louis2
- Lukács, György2
- Mandelʹshtam, Nadezhda2