- Lacković, Father Marinki, 1
- Lazar (Hrebeljanović), Duke, 1, 2, 3, 4
- Le Pen, Jean-Marie: La Croatie martyre, 1
- Lees, Michael: hostility to Maclean, 1, 2, 3;
- opposes Allied treatment of Serbians, 1;
- criticises Klugmann, 1;
- The Rape of Serbia, 1, 2, 3
- Lenin, V.I., 1, 2
- Leopolda, Sister, 1
- Lepoglava: prison at, 1, 2, 3
- Ljotić, Dmitrije, 1
- Ljubljana (formerly Laibach), 1, 2
- Lobkowicz, Count Erwin, 1, 2
- Löhr, General Alexander, 1, 2
- Lollards, 1
- London, Treaty of (1915), 1
- ‘Long March’, 1, 2
- Lovoković, Fabian, 1
- Low, Toby see Aldington, 1st Baron
- Luburić, Maks, 1, 2, 3, 4, 5;
- Luce, Clare Boothe, 1
- Lučić, Dehan: Secrets of the Albanian Mafia, 1
- Lusaka, 1
- Luther, Martin, 1