Entodon is taxonomically revised for East Asia. All taxa previously considered to occur in this region were studied. Among the morphological observations, special attention is paid to peristome structure by means of the scanning electron microscope. Thirty-three species are recognized for East Asia. Nineteen new synonyms are proposed at the specific level. A key to the identification of the species is provided, and for each species synonymy, illustrations, descriptions, habitat, distribution and representative specimens examined are given.