| Peromyscus gambelii subsp. geronimensis J. A. Allen, 1898 |
| Peromyscus gambelii subsp. hueyi E. W. Nelson & E. A. Goldman, 1932 |
| Peromyscus gambelii subsp. magdalenae Osgood, 1909 |
| Peromyscus gambelii subsp. margaritae Osgood, 1909 |
| Peromyscus gaurus Elliot, 1903 |
| Peromyscus geronimensis J. A. Allen, 1898 |
| Peromyscus gratus Merriam, 1898 |
| Peromyscus gratus subsp. erasmus Findley, 1952 |
| Peromyscus gratus subsp. gentilis Osgood, 1904 |
| Peromyscus gratus subsp. gratus Merriam, 1898 |
| Peromyscus gratus subsp. zapotecae Hooper, 1957 |
| Peromyscus greenbaumi Bradley, Ordóñez-Garza, Thompson, Wright, Ceballos, Kilpatrick & Schmidly, 2021 |
| Peromyscus guardia Townsend, 1912 |
| Peromyscus guardia subsp. guardia Townsend, 1912 |
| Peromyscus guardia subsp. harbisoni Banks, 1967 |
| Peromyscus guardia subsp. mejiae Burt, 1932 |
| Peromyscus guatemalensis Merriam, 1898 |
| Peromyscus guatemalensis subsp. guatemalensis Merriam, 1898 |
| Peromyscus gymnotis Thomas, 1894 |
| Peromyscus hemionotis Elliot, 1903 |