Aelurostrongylus falciformis belongs to the superfamily of Metastrongyloidea. This nematode occurs in European badgers and locates in lungs, in respiratory tract. Numerous species of land snails are intermediate hosts of the parasite. In 2015, parasitological necropsy of 9 badgers, shot in the Forest District Głęboki Bród in Augustowska Primeval Forest, was performed. Two examined animals were infected with nematodes A. falciformis. In the lungs of each badger two specimens of nematodes were detected (male and female). In the following article, description, morphometrical data and figures are presented. This is the first report of A. falciformis infection in badgers in Poland.