| Hesperomys truei Shufeldt, 1885 |
| Hodomys Merriam, 1894 |
| Hodomys alleni (Merriam, 1892) |
| Hodomys alleni subsp. alleni (Merriam, 1892) |
| Hodomys alleni subsp. elatturus Osgood, 1938 |
| Hodomys alleni subsp. guerrerensis Goldman, 1938 |
| Hodomys alleni subsp. vetulus Merriam, 1894 |
| Hodomys vetulus Merriam, 1894 |
| Holochilus Brandt, 1835 |
| Hypudaeus Illiger, 1811 |
| Hypudaeus leucogaster Wied, 1841 |
| Ichthyomyini |
| Megadontomys Merriam, 1898 |
| Megadontomys cryophilus (Musser, 1964) |
| Megadontomys nelsoni (Merriam, 1898) |
| Megadontomys thomasi (Merriam, 1898) |
| Megadontomys thomasi subsp. cryophilus (Musser, 1964) |
| Megadontomys thomasi subsp. nelsoni (Merriam, 1898) |
| Megadontomys thomasi subsp. thomasi (Merriam, 1898) |
| Microtus Schrank, 1798 |