The genus Stigmella is one of the largest group in the family Nepticulidae (Lepidoptera: Neticuloidea), comprising 428 described species in the world. In Korea, totally eight species have been known to date so far we know. Recently two newly recorded species are collected from Gwangneung forest, Gyeonggi province, Korea. This study is aimed to report two species, S. omelkoi Puplesis, 1984 and S. kurokoi Puplesis, 1984, for the first time from Korea. These two species have been known as mining on Quercus (Fagaceae) in larva stage. We provide specific diagnosis, illustration of diagnostic characters for each species with available information including collection locality, host plant and distribution range.