The Korean fruitflies are arranged and described taxonomically. a total of 48 species belonging to 369 genera under 7 subfamilies are rpresented in Korean fauna as the result. Of these, 12 species with 3 genera are new to science, and 19 species, 22 genera with 2 subfamilies are newly recorded respectively from Korea. The following new taxa are proposed: Kwasilparia gen. nov., Syusiroitoa gen. nov.,Chejuparia gen. nov., Urophora chejudoensis sp. nov., Vidalia koreana sp. nov, Pogonangelus assimilis sp. nov., Magnimyiolia interrupta sp. nov., Hemilea nabiae sp. nov., Kwasilparia multipilosa gen. et sp. nov., Syusiroitoa maculipennis gen. et sp. nov., Chejuparia pibari gen. et sp. nov., Ictericodes changhyoi sp. nov., Acinia jungsukae sp. nov., Tephritis koreacola sp. nov., and Paroxyna quelpartensis sp. nov. The Oriental fruitfly, Bactrocera dorsalis, was not found in Korea yet. Keys, some illustrations of various characters, host plants, and domestic localities for each species are given.