Abstract A total of 16 genera and 68 species of Chalcididae of Vietnam are taxonomically treated. Thirteen new species are described; the remaining 55 species are keyed, redescribed or provided with a diagnosis. Among these 37 species and eleven genera are recorded for the first time from Vietnam. The thirteen new species are: Antrocephalus neogalleriae Narendran & van Achterberg, sp. n.; Brachymeria neowiebesina Narendran & van Achterberg, sp. n., Brachymeria semirusula Narendran & van Achterberg, sp. n., Dirhinus neoclaviger Narendran & van Achterberg, sp. n., Epitranus narendrani van Achterberg, sp. n., Epitranus neonigriceps Narendran & van Achterberg, sp. n., Heydoniella vietnamensis Narendran & van Achterberg, sp. n., Megachalcis vietnamicus Narendran & van Achterberg, sp. n., Notaspidium vietnamicum Narendran & van Achterberg, sp. n., Oxycoryphe neotenax Narendran & van Achterberg, sp. n., Sthulapada neopadata Narendran & van Achterberg, sp. n., Sthulapada vietnamensis Narendran & van Achterberg, sp. n., and Tanycoryphus masii Narendran & van Achterberg, sp. n. The newly recorded genera are: Antrocephalus Kirby, 1883; Haltichella Spinola, 1811; Heydoniella Narendran, 2003; Hockeria Walker, 1834; Kriechbaumerella Dalla Torre, 1894; Notaspidium Dalla Torre, 1897; Oxycoryphe Kriechbaumer, 1894; Psilochalcis Kieffer, 1904; Sthulapada Narendran, 1989; Tanycorphus Cameron, 1905, and Trigonura Sichel, 1865. The following known species are recorded for the first time from Vietnam: Antrocephalus decipiens (Masi, 1929); Antrocephalus lugubris (Masi, 1932); Antrocephalus maculipennis (Cameron, 1905); Antrocephalus nasutus (Holmgren, 1869); Antrocephalus sepyra (Walker, 1846); Antrocephalus validicornis (Holmgren, 1868); Brachymeria alternipes (Walker, 1871); Brachymeria aurea (Girault, 1915); Brachymeria coxodentata Joseph, Narendran & Joy, 1972; Brachymeria euploeae (Westwood, 1837); Brachymeria hime Habu, 1960; Brachymeria jambolana Gahan, 1942; Brachymeria kamijoi Habu, 1960; Brachymeria lugubris (Walker, 1871); Brachymeria marmonti (Girault, 1924); Brachymeria minuta (Linnaeus, 1767); Brachymeria scutellocarinata Joseph, Narendran & Joy, 1972; Brachymeria shansiensis Habu, 1961; Brachymeria taiwana (Matsumura, 1910); Dirhinus anthracia Walker, 1846; Dirhinus claviger Bouček & Narendran, 1981; Epitranus albipennis Walker, 1874; Epitranus ater Bouček, 1982; Epitranus gauldi Bouček, 1982; Epitranus oxytelus Bouček, 1982; Epitranus ramnathi (Mani & Dubey, 1973); Haltichella delhensis Roy & Farooqi, 1984; Haltichella nipponensis Habu, 1960; Hockeria bangalorica Narendran, 1989; Hockeria guptai Narendran, 1989; Kriechbaumerella ayyari (Gahan, 1919); Kriechbaumerella cordigaster Roy & Farooqi, 1984; Kriechbaumerella destructor (Waterston, 1922); Kriechbaumerella nepalensis Narendran, 1989; Oxycoryphe scutellatus Narendran, 1989; Psilochalcis carinigena (Cameron, 1907), and Trigonura luzonensis Narendran, 1987. Brachymeria calopeplae Joseph, Narendran & Joy, 1972, is treated as a valid species.
