Hoffmann Johannes, IIHöglund Zygmund, III
     
      Kamenev (Rosenfeld) Lev Borisovic, IIIKant Immanuel, I
      Kaplan Fanja, IKapp Wolfgang, II
      Kautsky Karl, I, II, IIIKerenskij Aleksandr Fedorovic, I, II, III
      Kipling Rudyard, IIKornilov Lavr Georgevic, I, II, III
     
      Labriola Antonio, IIILabriola Arturo, II, III
      Lanfranconi Luigi, IILanzillo Agostino, III
      Lao-tse, ILa Palisse Jacques de Chabannes de, III
      Lassalle Ferdinand, ILavagnini Spartaco, III
      Lazzari Costantino, IIILazzeri Gerolamo, II
      Leibniz Gottfried Wilhelm, ILenin (Uljanov) Vladimir Ilic, I, II, III
      Leone XIII, IIILeone Enrico, I, III
      Leonetti Alfonso, ILeopardi Giacomo, II
      Liebknecht Karl, IILloyd George David, I, II, III
      Lombroso Cesare, IILongobardi Ernesto Cesare, III
      Loria Achille, IIILucci Arnaldo, II
      Ludendorff Erich, IILuigi XVI di Francia, I
      Lunacarskij Anatolij Vasilevic, I, IILussu Emilio, I
      Lüttwitz Walther von, IILuxemburg Rosa, II
     
      MacDonald James Ramsay, IIIMachiavelli Niccolò, II, III
      Macina Gervasio Luisa, IMaffi Fabrizio, I, III
      Malatesta Errico, II, IIIMangano Romeo, III
      Mannerheim Carl Gustav Emil, IIMarabini Anselmo, III
      Marat Jean-Paul, IIMaraviglia Maurizio, III
      Marco Aurelio, IMarinetti Filippo Tommaso, II, III
      Marini Niccolò, IIIMartire Egilberto, III
      Martov Lev (Julij Osipovic Tsederbaum), IMarx Carl, I, II, III
      Marx Wilhelm, IIIMatarazzo Francesco, III
      Matteotti Giacomo, I, IIIMazzini Giuseppe, I
      Mazzoni Nino, IIIMedici Lorenzo de', I
      Merli Stefano, IIIMerry del Val Rafael, III
      Mesnil Jacques, IIMichelet Jules, II
      Miglioli Guido, I, IIIMiliukov Pavel Nikolaevic, I