| Hydroides diramphus Mörch, 1863 |
| Hydroides dolabrus Tovar-Hernández, Villalobos-Guerrero, Kupriyanova & Y. Sun, 2016 |
| Hydroides elegans (Haswell, 1883) |
| Hydroides exaltatus (von Marenzeller, 1885) |
| Hydroides floridanus (Bush, 1910) |
| Hydroides gairacensis Augener, 1934 |
| Hydroides glandifer Rioja, 1941 |
| Hydroides gracilis (Bush, 1905) |
| Hydroides humilis (Bush, 1905) |
| Hydroides inermis Monro, 1933 |
| Hydroides lambecki Bastida-Zavala & ten Hove, 2002 |
| Hydroides lunulifer (Claparède, 1870) |
| Hydroides microtis Mörch, 1863 |
| Hydroides mongeslopezi Rioja, 1958 |
| Hydroides mucronatus Rioja, 1958 |
| Hydroides norvegica Gunnerus, 1768 |
| Hydroides ochotereana Rioja, 1941 |
| Hydroides ochoterena Rioja, 1941 |
| Hydroides panamensis Bastida-Zavala & ten Hove, 2003 |
| Hydroides parvus (Treadwell, 1902) |