The article reviews information on the fauna of the Lepidoptera of the Kreminski Forests (further in the text as «Forest massif»), the largest continuous forest massif in Luhansk region, and the National Nature Park of the same name «Kreminski Forests» (further in the text as «Park»), which constitutes its protected part. The aim of the study was to compile a unified list of Lepidoptera of the Forest massif and directly the Park, taking into account literary sources and own collections from 2009 to 2021 in 11 locations. As a result, a systematic list of 185 species of Lepidoptera species, recorded in the forest massif and specifically within the Park, based on both literature sources and the authors’ own collections gathered from 2009 to 2021 at 11 locations. As a result, a systematic list of 185 Lepidoptera species recorded in the forest massif was compiled for the first time, including 41 species directly documented within the Park territory. For each species, information is provided regarding its occurrence in the studied area, including literature references and, for newly recorded findings, the locality name, a brief description of the biotope, date, and number of specimens. The species Phyllocnistis valentinensis Hering, 1936 (family Gracillariidae) was recorede not only for the first time in the Park and the forest massif, but also for the entire Luhansk region. This small species of leaf-mining moths is trophically associated with willows (Salix fragilis, S.alba, S.triandra), whose leaves are mined by the caterpillar, forming a long, narrow epidermal corridor. The species Adscita statices (Linnaeus, 1758) (family Zygaenidae) was confirmed for the first time in Luhansk region based on actual collected material (previously, it has been considered doubtful for the region according to the “Chronicles of Nature” data). This species is fairly common, but is almost impossible to identify reliably by the external appearance of the imago alone. The Lepidoptera fauna of the forest massif is rich and diverse, but remains insufficiently studied, especially regarding nocturnal species and microlepidoptera. The ctual number of species inhabiting these forests is likely much higher and requires further investigation. In addition to expanding the geographical scope and frequency of monitoring, future research should employ the highly effective light-trapping method for collecting Lepidoptera.

Key words: biodiversity, «Kreminski forests», butterflies, moths, Lepidoptera, national nature park, floodplain forests, pine plantations, forestry and ecological factors, forest stand composition, sanitary condition.