Genus Hellinsia Tutt, 1905 is the largest group of the tribe Oidaematophorini (Lepidoptera, Pterophoridae, Platyptilinae). The genus is mostly distributed in the Neotropical region and Nearctic region, and partly in the Palaearctic and Afrotripical regions, with more than 190 described species from all over the world (Gielis, 2003). Among them, approximately 30 species of the genus Hellinsia Tutt have been reported in the Palaeartic region, including 9 species of Japan, 14 of Russia, and 15 of China. However, it has been poorly known from Korea to date, with only 4 known species: 2 species (H. lienigianus (Zeller) and H. distinctus (Herrich-Schffer) from South Korea (Park 1993, 1994) and 2 species (Hellinsia albidactylus (Yano) and H. lateolus (Yano)) from North Korea (Arenberger, 1991). This study is aimed to review all known species of the genus Helinsia Tutt in the Korean Peninsula, with three previously unrecorded species: Hellinsia ishiyamanus (Matsumura), H. Kuwayamai (Matsumura), and H. nigridactyla (Yano). Material examined in this study are preserved in the Insect collection, Korea National Arboretum, Korea. Consequently, 7 species, in total, are recorded from the Korean Peninsula.