| Sinophorus Förster, 1869 |
| Sinophorus leptofemur Sanborne, 1984 |
| Sinophorus neofurus Sanborne, 1984 |
| Sinophorus neoprocerus Sanborne, 1984 |
| Sinophorus procerus Sanborne, 1984 |
| Sinophorus relativus (Viereck, 1905) |
| Sinophorus splendidus Sanborne, 1984 |
| Slenda Gauld, 1984 |
| Spanotecnus Förster, 1869 |
| Sphelodon Townes, 1966 |
| Sphelodon annulicornis (Morley, 1914) |
| Sphinctus Gravenhorst, 1829 |
| Sphinctus gastoni Gauld, 1997 |
| Spilanomalon Morley, 1913 |
| Spilichneumon Thomson, 1894 |
| Spilichneumon taos (Cresson, 1877) |
| Spilocryptus Thomson, 1873 |
| Spilocryptus canarsiae (Ashmead, 1898) |
| Spilocryptus exannulatus Cushman, 1919 |
| Spilojoppa Cameron, 1904 |