Up to days, 5 species belonging to the genus Clytus, one of the large genera among the tribe Clytini have been recorded from Korean peninsula. The genus Clytus can be distinguished from the other genera by combination of following characteristics: width of head between each antennal socket longer than length of scape; carinae on frons absent; 1st segment of hind-tarsus 2 times shorter than combined length of 2nd+3rd segments; hind-femora weekly swelled in middle part; posterior part of metasternum without process in ventral view. Clytus sp. nov. is most similar to C. clavicornis Reiche, an endemic species to Sicily island in Southern Italy, having thickened 5th or 6th to apical antennal segment. However, this species can be distinguished from the latter species by specific morphological characteristics. As a result of this study, we report Clytus sp. nov. as new to science with brief description and illustrations diagnostic characteristics with key to the Korean Clytus species.