Three new species of the genus Osphya Illiger (Coleoptera: Osphyidae) are herein described from the western part of Yunnan Province, China: Osphya flavomarginata sp. nov. (type locality: Tiechang, Yunlong County), Osphya azurea sp. nov. (type locality: Maji, Fugong County), and Osphya clavata sp. nov. (type locality: Xima, Yingjiang County). Comparisons to their related species, keys for their identification, as well as the diagnosis of the genus Osphya are provided.