The moths of the Sündiken Mountains are still not comprehensively known. We aimed to study the distribution of Lepidoptera in more detail, particular for some rare species with limited records. We sum up the results of the expeditions to the Sündiken Mountains in the period between 2019 and 2022. The moths were recorded from 49 stations. 113 species belonging to a total of 9 families along with four new families (Drepanidae, Lasiocampidae, Nolidae, Sphingidae) from the Sündiken Mountains were identified. All the given 113 species are recorded for the first time from moth fauna of the Sündiken Mountains and likewise, 106 species are recorded for the first time from the moth fauna of Eskişehir province. Eight species are new records for the Central Anatolia Region: Amphipoea oculea (Linn.,1761), Mythimna (Anapoma) riparia (Ram.,1829), Noctua (Paranoctua) interposita (Hb.,1790), Ascotis selenaria ([Den. & Sch.],1775), Chloroclysta siterata (Huf., 1767), Pachypasa otus (Dr., [1773]), Menophra berenicidaria (Tr., 1924), Aedia leucomelas (Linn., 1758). With this study, the number of Eskişehir lepidopters increasead from 160 to 266 species. The identified species were assessed in terms of agricultural and forest entomology and the indicator species were discussed.