During a field trip to the western part of the Balkan Peninsula in 2016, investigations of several caves and karstic springs revealed six new gastropod species living in subterranean waters and resulted in some note-worthy faunistic records. Five of the new species are assigned to the genus Pavlović, 1913, namely , , , , and one to the genus Tomlin, 1930, namely New Albania and Kosovo distribution records are given for Schütt, 1975, Schütt, 1960, (Bole, 1961), and the first georeferenced record is given for Schütt, 1960. The most important environmental factors influencing habitat selection of these subterranean freshwater gastropods are briefly discussed.