Thirty-nine non-metric cranial traits of the Korean skulls were investigated and compared with those of eighteen human populations. The Korean have the highest incidence of the accessory infraorbital foramen(18%) of all populations compared. The sutural infraorbital foramen, posterior ethmoidal foramen absent, ear exotosis, temporal ossicle and bregmatic bone were not observed in the Korean samples. The distance analyses (MMD; mean value of divergence) revealed that the Korean are more closely related to the population in Kazach and Mongol than to the population in China and Japan.