Clethrionomys is a genus of small, slender voles. At the same time, several species were moved to the genus Craseomys, so members of both genera are referred to as red-backed voles.
The complete list of species is:
- Western red-backed vole, Clethrionomys californicus
- Tien Shan red-backed vole, Clethrionomys centralis
- Southern red-backed vole, Clethrionomys gapperi
- Bank vole, Clethrionomys glareolus
- Northern red-backed vole, Clethrionomys rutilus