Seven new species of subterranean and endogean terrestrial isopods from Tuscany (central Italy) are described in the families Trichoniscidae Sars, 1899 (Leucocyphoniscus pisanus n. sp., Moserius gruberae n. sp., Moserius talamonensis n. sp.) and Armadillidiidae Brandt, 1833 (Typhlarmadillidium occidentale n. sp., Paraschizidium ferrarai n. sp., Trogleluma pilosa n. sp. and Alloschizidium labronicum n. sp.). The diagnostic characters and the affinities of the new species are discussed.