• Microcaetus Meunier, 1905 (uncertain)
• Microcalamus A.R. Franchet, 1889
• Microcalamus J.S. Gamble, 1890 accepted as Racemobambos Holttum, 1956
• Microcalanus G.O. Sars, 1903
• Microcallis H. Sydow, 1926
• Microcalva Saul & Popenoe, 1992 † (uncertain)
• Microcanus Dillon & Dillon, 1946
• Microcoleus Desmazières ex Gomont, 1892 [Family: Microcoleaceae]
• Microcoleus Hong, 1982 † [Family: Elateridae]
• Microcolus Cotton & Godfrey, 1932
• Microcyllus Thorell, 1891 (uncertain)
• Micromalus Fowler, 1913 accepted as Paromalus Erichson, 1834
• Micropalpus Macquart, 1835 accepted as Micropalpis Macquart, 1834
• Microrallus Svec, 1983 † (uncertain)
• Microvalgus Kraatz, 1883