Cricetids (family Cricetidae) are small rodents classified in the order Rodentia. They include hamsters, voles, lemmings, muskrats, and New World rats and mice.
Cricetidae is divided into five subfamilies:
- For members of the subfamily Arvicolinae (voles, lemmings, and muskrats) see List of arvicolines
- For members of the subfamily Cricetinae (hamsters), see List of cricetines
- For members of the subfamily Neotominae (deer mice, packrats, and grasshopper mice), see List of neotomines
- For members of the subfamily Sigmodontinae (New World rats and mice), see List of sigmodontines
- For members of the subfamily Tylomyinae (vesper and climbing rats), see Tylomyinae § List of Species