Clethrionomys is a genus of small, slender voles.

[2] In recent years the genus name was changed to Myodes, however a 2019 paper found that Myodes was actually a junior synonym for Lemmus, thus making it unusable.

As such, Clethrionomys is re-established as the proper genus name.

[2] At the same time, several species were moved to the genus Craseomys, so members of both genera are referred to as red-backed voles.

[3] This genus was described by Johannes von Nepomuk Franz Xaver Gistel under the pseudonym "G. Tilesius".