Dichrogaster is een geslacht van insecten uit de orde vliesvleugeligen (Hymenoptera) en de familie Ichneumonidae.
Soorten D. aestivalis (Gravenhorst, 1829) D. alternans Townes, 1983 D. ambonigra Townes, 1983 D. ampla Townes, 1983 D. atriventris Townes, 1983 D. bicolor (Cushman, 1924) D. bischoffi (Schmiedeknecht, 1905) D. carinata Townes, 1983 D. crassa (Provancher, 1882) D. crassicornis Horstmann, 1976 D. chrysopae (Ashmead, 1894) D. defecta Townes, 1983 D. densa Townes, 1983 D. dorsata Townes, 1983 D. fulvescens Townes, 1983 D. gemina Townes, 1983 D. genalis (Habermehl, 1925) D. granulata Townes, 1983 D. heteropus (Thomson, 1896) D. hispanica Bordera & Horstmann, 1995 D. imperialis Yoshida & Konishi, 2008 D. jonathani Townes, 1983 D. kichijoi (Uchida, 1940) D. lateralis Townes, 1983 D. liostylus (Thomson, 1885) D. longicaudata (Thomson, 1884) D. madeirae (Roman, 1938) D. mandibularis Horstmann, 1973 D. modesta (Gravenhorst, 1829) D. nigriceps Townes, 1983 D. obscura Townes, 1983 D. oregona Townes, 1983 D. pallens Townes, 1983 D. parva Yoshida & Konishi, 2008 D. patruelis (Cushman, 1919) D. perlae (Doumerc, 1855) D. potens Townes, 1983 D. punctipleuris Townes, 1983 D. saharator (Aubert, 1964) D. schimitscheki (Fahringer, 1935) D. tenerifae (Hellen, 1949) D. tersa Townes, 1983 D. trochanteralis Townes, 1983 D. zonata Townes, 1983