| Nysso Latreille, 1796 |
| Nysson Latreille, 1802 |
| Nysson aztecus Cresson, 1882 |
| Nysson cressoni Cameron, 1904 |
| Nysson dives Handlirsch, 1887 |
| Nysson euphorbiae R. Bohart, 1968 |
| Nysson longispinis Cameron, 1905 |
| Nysson quinquespinosus Say, 1823 |
| Nysson zapotecus Cresson, 1882 |
| Nyssonini Latreille, 1804 |
| Nyssonus Rafinesque, 1815 |
| Ochleroptera Holmberg, 1903 |
| Ochleroptera jamaica Pate, 1947 |
| Oclocletes Banks, 1913 |
| Ococletes Mickel, 1916 |
| Olgiina Nemkov & Lelej, 1996 |
| Omphalius Vachal, 1900 |
| Oreocrabro R.C.L. Perkins, 1902 |
| Ornicrabro Leclercq, 1973 |
| Orthocrabro Tsuneki, 1990 |