A parasitological examination of fecal samples, liver, intestine, and lungs of 36 mouflons was done. The materials were obtained after regular hunting in South-West Bulgaria. The materials are from the DGS „Blagoevgrad“ (n=1), DGS „Mesta“ (n=3), DLS „Dikchan“ (n=31), and DLS „Iskar“ (n=1). In a partial helminthological autopsy of the lungs and examination of fecal samples with Baerman’s method, invasion by lung nematodes of the family Protostrongylidae were found. In a partial helmintho-logical autopsy of the liver and intestine, trematodes of the genus Dicrocoelium, cestode larvae (Cysticercus tenuicollis) and nematodes of the genus Haemonchus were isolated. After examination of fecal samples by the method of Fulleborn, eggs of nematodes o...