Scaphisoma koreanum Kim and Ahn, new species and Scaphisoma sambangsanense Kim and Ahn, new species are described in Korea. The former is similar to Scaphisoma hapiroense Löbl but can be distinguished by the ratio of antennomeres 3 to 11 (4:7:11:11:15:10:13:13:16), the bicolored elytron, and the different form and structure of the aedeagus. The latter is similar to Scaphisoma haemorrhoidale Reitter but can be distinguished by the color pattern of the elytron and the different form and structure of the aedeagus. Scaphisoma limbatum Erichson is reported for the first time in Korea. Descriptions and illustrations of habitus and diagnostic characters of the two new species are provided.