This paper treats the superfamily Psylloidea Burmeister, 1835 from Korea. A total of 81 species belongong to 19 genera under 6 families are represented in Korean fauna, among them 1 subspecies, 26 species, 1 genus, 2 tribes with 1 subfamily are new to science, and 10 species are newly recorded from Korea. The following new taxa are proposed: Metapsyllinae subfam. nov., Epitriozini trib. nov., Trichochermini trib. nov., Koreaphalara koreana gen. et sp. nov., Aphalara jungsukae sp. nov., Psylla peninsularies sp. nov., P. Peninsularis hanlasanensis sp. et ssp.nov., p. hanlabori sp. nov., P. palgongsana sp. nov., P. pseudoviburni sp. nov., P.juwangsana sp. nov., P. seungmoi sp. nov., P.seonhyeongae sp. nov., P. silvestris sp. nov., P.bibari sp. nov., P. koreacola sp. nov., P.koreacola sp. nov., P. quelparticola sp. nov., P. ulleungensis sp. nov., P. bibari sp. nov., P. jukyungi sp. nov., P. lineaticeps sp. nov., P. truncaticephala sp. nov., P. obongsana sp. nov., P. kwonnabiae sp. nov., P. sangjaei sp. nov., P. nopeunsanicola sp. nov., P. subcoccinea sp. nov., Bactericara breviatiformis sp. nov., B. koreostriola sp. nov., and B. nobilis sp. nov. The famous pear sucker, Psylla pyricoal, and apple sucker, P. mali are discovered for the first time in Korea. Keys are given for all the taxa respectively, some illustrations of various characters are provided. Host plants and domestic localities for each species are arranged.