| Hypolabis Förster, 1862 |
| Hypomicrogaster Ashmead, 1898 |
| Hypomicrogaster ecdytolophae (Muesebeck, 1922) |
| Ichneutidea Ashmead, 1900 |
| Ichneutidea proteroptoides Viereck, 1905 |
| Ichneutidea secunda Rohwer, 1908 |
| Ichneutinae Sharkey, 1998 |
| Ichneutini |
| Iconella Mason, 1981 |
| Iconella etielle (Viereck, 1911) |
| Idiasta Förster, 1862 |
| Idiasta euryzona Wharton, 1980 |
| Idiasta maritima (Haliday, 1838) |
| Incubus Schrank, 1802 |
| Iphiaulacidea Fahringer, 1926 |
| Iphiaulacini |
| Iphiaulax Förster, 1862 |
| Iphiaulax faustus Cresson, 1872 |
| Iphiaulax megaptera Cameron, 1887 |
| Ipobracon Dalla Torre, 1898 |