From the Seoraksan National Park, Korea, a new enchytraeid genus, Globulidrilus gen. nov., is defined and three new species, Globulidrilus helgei sp. nov., Fridericia seoraksani sp. nov. and Mesenchytraeus longiductus sp. nov., are described. Globulidrilus also includes Marionina riparia Bretscher, 1899 augm. Cernosvitov 1928, a globally distributed species with a complicated taxonomic history. Pending a revision of Marionina riparia sensu latu (auct.), we retain the species name riparia for a variant of common occurrence in Europe.