The genusCharaeaBaly is distributed in the eastern Palaearctic, Himalayas, China and adjacent countries of the Oriental Region. Currently, 59 species of the genusCharaeahave been recorded. The species ofCharaeais characterised with a robust tubular aedeagus that terminates with a more or less distinct apical process with theCharaea coomanigroup having an internal sac with long sharp lateral sclerites. Up to now, 13 species of this group have been described in the Oriental Region, four of which are found in Vietnam.Charaea dinhcuongisp. nov.is described as a new species, based on specimens collected from Phu Quoc Island in southern Vietnam. Colour photographs of habitus and body details and DNA barcode sequences are presented. An identification key is provided for all Vietnamese species from theCharaea coomanigroup.