All the known Korean species of the genus Oberea Dejean, 1835 are revised by confirmation of specimen. The recorded species of Korea were very confused and cited sequentially because of lacking confirmation, among them, O. fuscipennis, O. inclusa, and O. pupillata were misidentified as O. atropunctata, O. vittata, and O. heyrovskyi, respectively. And, O. simplex was synonym of O. atropunctata already. Totally, 12 species of the genus Oberea were recognized from Korea. Diagnoses, illustrations of habitus male genitalia, host plants, distribution for each species, and a key for Korean Oberea species are provided.