| Trichomma Wesmael, 1849 |
| Trichomma politum Dasch, 1984 |
| Trichonotus Cameron, 1905 |
| Triclistus Förster, 1869 |
| Triclistus melanocephalus (Cameron, 1886) |
| Triclistus thoracicus Ashmead, 1946 |
| Trieces Townes, 1946 |
| Trieces platysoma Townes, 1946 |
| Trieces tricarinatus (Cresson, 1868) |
| Trispilus Kriechbaumer, 1901 |
| Trochiscomerus Meyer, 1931 |
| Troctocerus Woldstedt, 1877 |
| Trogini Förster |
| Trogomorpha Ashmead, 1900 |
| Trogomorpha arrogans (Cresson, 1874) |
| Trogus Panzer, 1806 |
| Trogus atrocaeruleus Cresson, 1868 |
| Trogus exesorius Brullé, 1846 |
| Trogus nigrithorax (Strand, 1912) |
| Trogus pennator (Fabricius, 1793) |