The potter wasp genus Pareumenes de Saussure, 1855, is represented in Vietnam by two species, Pareumenes quadrispinosus acutus Liu, 1941 of the subgenus Pareumenes, and a new species, Pareumenes caoduong, belonging to the subgenus Nortonia. The new species is described and figured. A key to all known taxa of this genus from the Oriental region is also provided.