Fourteen species of terrestrial isopods (Oniscidea) from Brazilian karstic regions are described as new, i.e., Novamundoniscus mandacaru Campos-Filho, Araujo & Bichuette, n. sp. (Dubioniscidae), Diploexochus exu Campos-Filho, Sfenthourakis & Bichuette, n. sp., Gabunillo enfurnado Campos-Filho, Sfenthourakis & Bichuette, n. sp., Venezillo moreirai Campos-Filho, Carpio-Díaz & Bichuette, n. sp., V. garimpeiro Campos-Filho, Borja-Arrieta & Bichuette, n. sp., V. dioi Campos-Filho, Araujo & Taiti, n. sp., V. limai Campos-Filho, Carpio-Díaz & López-Orozco, n. sp., and V. muriloi Campos-Filho, Sfenthourakis & Taiti, n. sp. (Armadillidae) from the state of Bahia; N. canopus Campos-Filho, Gallo & Gallão, n. sp. from the state of Goiás, Caraiboscia jabutiensis Campos-Filho, Taiti & Bichuette, n. sp. (Philosciidae), Circoniscus caeruleus Campos-Filho, Sfenthourakis & Bichuette, n. sp. (Scleropactidae), Trichorhina amplitelson Campos-Filho, Carpio-Díaz & Borja-Arrieta, n. sp. (Platyarthridae), and N. kayabi Campos-Filho, Sfenthourakis & Araujo, n. sp. from the state of Mato Grosso; and Diploexochus carrapicho Campos-Filho, López-Orozco & Taiti, n. sp. from the state of Mato Grosso do Sul. In addition, knowledge on the distribution of Benthana olfersii (Brandt, 1833), B. taeniata Araujo & Buckup, 1994 (Philosciidae), Ctenorillo ferrarai Campos-Filho, Araujo & Taiti, 2014, Cubaris murina Brandt, 1833 (Armadillidae), and Porcellionides pruinosus Brandt, 1833 (Porcellionidae) is expanded. Distribution maps, characterization of the caves where the species were collected, and subterranean remarks are given.