People's Libraries Society (Polish: Towarzystwo Czytelni Ludowych, TCL) was an educational society established in 1880 for the Prussian partition of Poland (active in the regions of Greater Poland or the Grand Duchy of Poznan, Pomerania, West Prussia, and Silesia). Its main goal was to promote education in Polish language among the people, especially the lower classes, and to revert the Germanisation practices of the Prussian authorities. The society established a network of libraries, reading rooms and organized speeches. It was active till the outbreak of World War II in 1939.