Rodents are animals that gnaw with two continuously growing incisors. Forty percent of mammal species are rodents, and they inhabit every continent except Antarctica. This list contains circa 2,700 species in 518 genera in the order Rodentia.

Suborder Hystricomorpha

Family Ctenodactylidae

Family Diatomyidae

Family Bathyergidae

Family Heterocephalidae

Family Hystricidae

Family Petromuridae

Family Thryonomyidae

Family Erethizontidae

Subfamily Chaetomyinae

Subfamily Erethizontinae

Family Chinchillidae

Family Dinomyidae

Family Caviidae

Subfamily Caviinae

Subfamily Dolichotinae

Subfamily Hydrochoerinae

Family Dasyproctidae

Family Cuniculidae

Family Ctenomyidae

Family Octodontidae

Family Abrocomidae

Family Echimyidae

Subfamily Dactylomyinae

Subfamily Echimyinae

Subfamily Eumysopinae

Subfamily Heteropsomyinae

Subfamily Capromyinae (hutias)

Tribe Capromyini

Tribe Plagiodontini

Tribe Isolobodontini

Tribe Hexolobodontini

Family Heptaxodontidae

Subfamily Clidomyinae

Subfamily Heptaxodontinae

Family Myocastoridae

Suborder Anomaluromorpha

Family Anomaluridae

Subfamily Anomalurinae

Subfamily Zenkerellinae

Family Pedetidae

Suborder Sciuromorpha

Family Aplodontidae

Family Sciuridae

Subfamily Ratufinae

Subfamily Sciurillinae

Subfamily Sciurinae

Tribe Sciurini

Tribe Pteromyini

Subfamily Callosciurinae

Subfamily Xerinae

Tribe Xerini

Tribe Protoxerini

Tribe Marmotini

Family Gliridae

Subfamily Graphiurinae

Subfamily Leithiinae

Subfamily Glirinae

Suborder Castorimorpha

Family Castoridae

Family Geomyidae

Family Heteromyidae

Subfamily Dipodomyinae

Subfamily Heteromyinae

Subfamily Perognathinae

Suborder Myomorpha

Family Dipodidae

Subfamily Allactaginae

Subfamily Cardiocraniinae

Subfamily Dipodinae

Subfamily Euchoreutinae

Subfamily Sicistinae

Subfamily Zapodinae

Family Platacanthomyidae

Family Spalacidae

Subfamily Myospalacinae

Subfamily Rhizomyinae

Subfamily Tachyoryctinae

Subfamily Spalacinae

Family Calomyscidae

Family Nesomyidae

Subfamily Petromyscinae

Subfamily Delanymyinae

Subfamily Dendromurinae

Subfamily Mystromyinae

Subfamily Cricetomyinae

Subfamily Nesomyinae

Family Cricetidae

Subfamily Lophiomyinae

Subfamily Cricetinae

Subfamily Arvicolinae

Subfamily Tylomyinae

Tribe Nyctomyini

Tribe Tylomyini

Subfamily Neotominae

Subfamily Sigmodontinae

Tribe Abrotrichini

Tribe Akodontini

Tribe Ichthyomyini

Tribe Oryzomyini

Tribe Phyllotini

Tribe Reithrodontini

Tribe Sigmodontini

Tribe Thomasomyini

Family Muridae

Subfamily Leimacomyinae

Subfamily Deomyinae

Subfamily Otomyinae

Subfamily Gerbillinae

Subfamily Murinae