Louis Léger (15 January 1843 – 30 April 1923) was a French writer and pioneer in Slavic studies.
Léger studied under Aleksander Chodźko at the Collège de France, whose position he eventually succeeded in 1885 by taking up the Slav Literature and Language chair of Adam Mickiewicz, which he occupied until 1923.
His "A History of Austro-Hungary", first edition published in 1879 and last in 1920, was considered one of the best textbooks on the subject in any Western language.
[2][3] In 1916, Tomáš Garrigue Masaryk and Edvard Beneš founded the Comité national tchèque in Paris, and almost at the same time Louis Eisenmann, Léger, and Ernest Denis founded the Comité national d'études, which also advocated for the independence of a Czech state.
In 1918, the French government created Czechoslovak legions, which represented a significant auxiliary force at a decisive phase of the war after Russia had made peace.