Eleven genera of the braconid subfamily Agathidinae are revised for Taiwan. Keys to the genera and species are provided. Of the 39 included species, 8 are new to Taiwan, 21 are new to science, 10 are new combinations and 1 is combination revival. Descriptions and illustrations for each species are given. The genera Cenostomus Foerster, Eumicrodus Foerster, Agathiella Szepligeti, Lytopylus Viereck, Aerophilopsis Viereck, Ioxia Enderlein, Aerophilim Enderlein, Ditropia Enderlein and Agathellina Enderlein are newly synonymized with Bassus Fabricius. The genera Brachyropalum Kriechbaumer, Zelomorpha Ashmead, Lisitheria Cameron, Xanthomicrodus Cameron, Caenophylax Schulz, Spilomicrodus Cameron and Zelomorphidea Viereck are newly synonymized with Coccygidium Saussdure.