| Strongylus acutus Lundahl, 1848 |
| Strongylus anseris Zeder, 1800 |
| Strongylus axei Cobbold, 1879 |
| Strongylus dentatum Rudolphi, 1803 |
| Strongylus edentatus (Looss, 1900) Railliet & Henry, 1909 |
| Strongylus equinus Mueller, 1780 |
| Strongylus lupi Rudolphi, 1809 |
| Strongylus minor Kuhn, 1829 |
| Strongylus polygyrus Dujardin, 1845 |
| Strongylus radiatus Rudolphi, 1803 |
| Strongylus subauricularis Rudolphi, 1819 |
| Strongylus tetracanthus Mehlis, 1831 |
| Strongylus tubaeformis Zeder, 1800 |
| Strongylus tubifex Nitzsch, 1819 |
| Strongylus uncinatus Lundahl, 1848 |
| Strongylus vasorum Baillet, 1866 |
| Strongylus vulgaris (Looss, 1900) Railliet & Henry, 1909 |
| Syngaminae Leiper, 1912 |
| Syngamini Leiper, 1912 |
| Syngaminii Leiper, 1912 |