This study named as "Lepidoptera Fauna of the Forest Enterprise Directorate of Kastamonu" was made for determining distribution and presence of Lepidoptera fauna in Kastamonu Forest Enterprise region between 2010-2013 years. Light traps and sweep nets were used to collect the samples from the study area. A total of 70 species belonging to 15 families were identified. The family Nymphalidae was the richest with a number of 13 species. This was followed by Noctuidae (12), Pieridae (10), Geometridae (8), Lycaenidae (6), Satyridae (6), Arctiidae (4), Sphingidae (3), Hesperiidae (2), Papillionidae (1), Zygaenidae (1), Pyralidae (1), Lasiocampidae (1), Saturniidae (1), and Drepanidae (1). Thirty four of captured lepidopter species are listed in the Turkish IUCN Red List as Least Concern (LC). Polyommatus cornelia (Gerhard, 1851) (Lycaenidae) and Maniola megala (Oberthür, 1909) (Satyridae) were determined as endemic and near endemic, respectively.