In this paper we report first records of three species of the family Glossosomatidae (Insecta: Trichoptera) from the Republic of Kosovo: Glossosoma intermedium and G. bifidum from Sharr Mountains, and G. klotho from Sharr Mountains and Bjeshkët e Nemuna Mountains. Glossosoma intermedium has a disjunct distribution in Europe and according to the current knowledge is almost completely absent from the Southeastern Europe. Glossosoma bifidum, whose distribution range is widened by this investigation, has been rarely sampled in the Balkan Peninsula but is also known from Italy, Spain and Central Europe. A rare Balkan endemic species Glossosoma klotho is found again outside Greece. This investigation further highlights Sharr Mountains as an important area in Europe rich with species of the genus Glossosoma.