| Misantlius rufiventris Asiain & Márquez, 2003 |
| Misantlius torquatus Sharp, 1885 |
| Mitona Raffray, 1904 |
| Mitona sotoi Park, 1945 |
| Monista Sharp, 1876 |
| Monista fenyesi Bernhauer, 1910 |
| Monista mexicana Bernhauer, 1910 |
| Monista troglodytes (Erichson, 1840) |
| Musicoderus Sharp, 1885 |
| Mycetoporini Thompson, 1859 |
| Mycetoporus Mannerheim, 1830 |
| Mycetoporus coxalis Sharp, 1884 |
| Mycetoporus segregatus Campbell, 1991 |
| Myllaena Erichson, 1837 |
| Myllaena arcana Casey, 1911 |
| Myllaena hopi Klimaszewski, 1982 |
| Myllaena potawatomi Klimaszewski, 1982 |
| Myllaena serrano Klimaszewski, 1982 |
| Myllaenini Ganglbauer, 1895 |
| Myrmecocephalus MacLeay, 1871 |