| Spermophilus adocetus subsp. infernatus Álvarez & Ramírez-Pulido, 1968 |
| Spermophilus annulatus Audubon & Bachman, 1842 |
| Spermophilus annulatus subsp. annulatus Audubon & Bachman, 1842 |
| Spermophilus annulatus subsp. goldmani Merriam, 1902 |
| Spermophilus atricapillus W. E. Bryant, 1889 |
| Spermophilus beecheyi (Richardson, 1829) |
| Spermophilus beecheyi subsp. nudipes (Huey, 1931) |
| Spermophilus beecheyi subsp. rupinarum (Huey, 1931) |
| Spermophilus canescens Merriam, 1890 |
| Spermophilus couchii Baird, 1855 |
| Spermophilus grammurus (Say, 1823) |
| Spermophilus grammurus subsp. atricapillus W. E. Bryant, 1889 |
| Spermophilus grammurus subsp. couchii Baird, 1855 |
| Spermophilus grammurus subsp. fisheri Elliot, 1901 |
| Spermophilus grammurus subsp. macrurus J. A. Allen, 1889 |
| Spermophilus grammurus var. beecheyi J. A. Allen, 1874 |
| Spermophilus grammurus var. grammurus Say, 1823 |
| Spermophilus harrisii Audubon & Bachman, 1854 |
| Spermophilus harrisii subsp. saxicolus Mearns, 1896 |
| Spermophilus leucurus (Merriam, 1889) |