Five species of the Laboulbeniales are reported to the Korean mycoflora. They are Laboulbenia acupalpi Spegazzini on Acupalpus hilaris Tschitschérine, L. pseudomasei Thaxter on Anoplogenius cyanescens(Hope), Rickia peyerimhoffii Maire on Scaphidium femorale Lewis, Zodiomyces odae Majewski et Sugiyama on Sternolophus rufipes Fabr. and Z. vorticellarius Thaxter on Berosus fairmairei Zaitzev. Among these species L. pseudomasei Thaxter and Z. odae Majewski et Sugiyama are the first report to South Korea. L. acupalpi Spegazzini and Z. vorticellarius Thaxter found on species which are different from previous to host insects. R. peyerimhoffii Maire is newly described main land of Korea, although it was reported from Jeju island.