| Oryzomys palatinus Merriam, 1901 |
| Oryzomys palustris (Harlan, 1837) |
| Oryzomys palustris subsp. albiventer Merriam, 1901 |
| Oryzomys palustris subsp. aquaticus J. A. Allen, 1891 |
| Oryzomys palustris subsp. aztecus Merriam, 1901 |
| Oryzomys palustris subsp. couesi (Alston, 1877) |
| Oryzomys palustris subsp. cozumelae Merriam, 1901 |
| Oryzomys palustris subsp. crinitus Merriam, 1901 |
| Oryzomys palustris subsp. lambi Burt, 1934 |
| Oryzomys palustris subsp. mexicanus J. A. Allen, 1897 |
| Oryzomys palustris subsp. peninsulae Thomas, 1897 |
| Oryzomys palustris subsp. peragrus Merriam, 1901 |
| Oryzomys palustris subsp. regillus Goldman, 1915 |
| Oryzomys palustris subsp. texensis J. A. Allen, 1894 |
| Oryzomys palustris subsp. zygomaticus Merriam, 1901 |
| Oryzomys peninsulae Thomas, 1897 |
| Oryzomys rhabdops Merriam, 1901 |
| Oryzomys rhabdops subsp. angusticeps Merriam, 1901 |
| Oryzomys rostratus Merriam, 1901 |
| Oryzomys rostratus subsp. carrorum Lawrence, 1947 |