| Kingdom: | Animalia |
| Phylum: | Chordata |
| Subphylum: | Vertebrata |
| Class: | Mammalia |
| Order: | Rodentia |
| Suborder: | Sciuromorpha |
| Family: | Sciuridae |
- Genus
- species – Common Name
- Aeretes
- melanopterus – Groove-tailed Flying Squirrel
- Aeromys
- tephromelas, thomasi – Large Black Flying Squirrel
- Ammospermophilus
- harrisii, insularis, interpres, leucurus, nelsoni – Antelope ground squirrel
- Atlantoxerus
- getulus – Barbary ground squirrel
- Belomys
- pearsoni – Hairy-footed Flying Squirrel
- Callosciurus Callosciurus
- adamsi, albescens, baluensis, caniceps, elbertae, erythraeus, ferrugineus, finlaysoni, flavimanus, inornatus, melanogaster, natatus, nigrovittatus, phayrei, prevostii, pygerythrus, quinquestriatus – Tricolored Squirrel
- Callosciurus Rubrisciurus
- rubriventer – Beautiful Squirrel
- Cynomys Cynomys
- ludovicianus – Black-tailed prairie dog
- mexicanus – Mexican prairie dog
- Cynomys Leucocrossuromys
- gunnisoni – Prairie dog
- leucurus – White-tailed prairie dog
- parvidens – Utah prairie dog
- Dremnomys
- everetti, lokriah, pernyi, pyrrhomerus, rufigenis – Red-cheeked Squirrel
- Epixerus
- ebii – African palm squirrel
- Eupetaurus
- cinereus – Woolly Flying Squirrel
- Eutamias Eutamias
- sibericus – Siberian chipmunk
- Eutamias Neotamias
- alpinus, amoenus, bulleri, canipes, cinereicollis, dorsalis, merriami, minimus, obscurus, ochrogenys, palmeri, panamintinus, quadrimaculatus, quadrivittatus, ruficaudus, senex, siskiyou, sonomae, speciosus, townsendii, umbrinus – Western American chipmunk
- Exilisciurus
- concinnus, exilis, luncefordi, samaricus, surrutilus, whiteheadi – Pygmy Squirrel
- Funambulus
- layardi, palmarum, pennanti, sublineatus, tristriatus – Asiatic striped palm squirrel
- Funisciurus
- anerythrus bayonii, carruthersi, congicus, isabella, lemniscatus, leucogenys, pyrrhopus, substriatus – African striped squirrel
- Glaucomys
- sabrinus, volans – New World Flying Squirrel
- Glyophotes
- canalvus, simus – Bornean Pygmy Squirrel
- Heliosciurus
- gambianus, rufobrachium, ruwenzorii – Sun squirrel
- Hylopetes Euglaucomys
- fimbriatus – Arrow-tailed Flying Squirrel
- Hylopetes Hylopetes
- alboniger, lepidus, mindanensis, nigripes, phayrei, spadiceus – Arrow-tailed Flying Squirrel
- Hyosciurus
- heinrichi – Celebes long-nosed squirrel
- Iomys
- horsfieldi – Horsfield’s Flying Squirrel
- Lariscus
- hosei, insignis – Malaysian Striped Ground Squirrel
- Marmota
- bobak, broweri, caligata, camtschatica, caudata, marmota, menzbieri, olympus, vancouverensis – Marmot
- flaviventris – Yellow-bellied marmot
- monax – Woodchuck, Ground hog
- Menetes
- berdmorei – Berdmore’s Squirrel
- Microsciurus
- alfari, flaviventer, mimulus, santanderensis – Neotropical dwarf squirrel
- Myosciurus
- pumilio – African pygmy squirrel
- Nannosciurus
- melanotis – Black-eared Squirrel
- Paraxerus
- alexandri, boehmi, cepapi cooperi, flavivittis, lucifer, ochraceus, palliatus, poensis, vexillius, vincenti – African bush squirrel
- Petaurillus
- emiliae, hosei, kinlochii – Pygmy Flying Squirrel
- Petaurista
- alborufus, elegans, leucogenys, magnificus, petaurista – Giant Flying Squirrel
- Petinomys
- bartelsi, crinitus, electilis, fuscocapillus, genibarbis, hageni, setosus, vordermanni – Dwarf Flying Squirrel
- Prosciurilus
- abstrusus, leucmus, murinus – Celebes dwarf squirrel
- Protoxerus Allosciurus
- aubinnii – Oil palm squirrel
- Protoxerus Protoxerus
- stangeri – Oil palm squirrel
- Pteromys
- momonga, volans – Old World Flying Squirrel
- Pteromyscus
- pulverulentus – Smoky Flying Squirrel
- Ratufa
- affinis, bicolor, indica, macoura – Giant squirrel
- Rheithrosciurus
- macrotis – Groove-tailed squirrel
- Rhinosciurus
- laticaudatus – Long-nosed Squirrel
- Sciurillus
- pusillus – Neotropical pygmy squirrel
- Sciurotamus Rupestes
- forresti – Rock squirrel
- Sciurotamus Sciurotamias
- davidianus – Père David’s rock squirrel
- Sciurus Guerlinguetus
- aestuans, gilvigularis, granatensis, ignitus, pucheranii, richmondi, sanborni, stramineus – Tree squirrel
- Sciurus Hadrosciurus
- flammifer, igniventris, purrhinus, spadiceus – Tree squirrel
- Sciurus Hesperosciurus
- griseus – Western grey squirrel
- Sciurus Otosciurus
- aberti – Tree squirrel
- Sciurus Sciurus
- alleni, arizonensis, aureogaster, colliaei, deppei, lis, oculatus, variegatoides, vulgaris, yucatanensis – Tree squirrel
- carolinensis – Grey squirrel
- niger – Fox squirrel
- Sciurus Tenes
- anomalus – Tree squirrel
- Spermophilopsis
- leptodactylus – Long-clawed ground squirrel
- Spermophilus Callospermophilus
- lateralis, madrensis, saturatus – Golden-mantled squirrel
- Spermophilus Colobotis
- erythrogenys, fulvis, major – Ground squirrel
- Spermophilus Ictidomys
- mexicanus, perotensis, spilosoma, tridecemlineatus – Ground squirrel
- Spermophilus Otospermophilus
- adocetus, annulatis, atricapillus, beecheyi, variegatus – Rock squirrel
- Spermophilus Poliocitellus
- franklinsii – Ground squirrel
- Spermophilus Spermophilus
- armatus, belingi, brunneus, citellus, dauricus, pygmaeus, relictus, suslinus, townsendii, washingtonii – Ground squirrel
- richardsonii – Richardson’s ground squirrel
- Spermophilus Urocitellus
- parryii, columbianus – Ground squirrel
- undulatus – Arctic ground squirrel
- Spermophilus Xerospermophilus
- mohavensis, tereticaudus – Ground squirrel
- Sundasciurus Aletesciurus
- davensis, juvencus, hippurus, hoogstraali, mindanensis, mollendorffi, philippinensis, rabori, samarensis, steerii – Sanda Tree Squirrel
- Sundasciurus Sundasciurus
- brookei, lowii, jentincki, tenuis – Sanda Tree Squirrel
- Syntheosciurus
- brochus, poasensi – Neotropical montane squirrel
- Tamias
- striatus – Eastern American chipmunk
- Tamiasciurus
- douglasii – Douglas red squirrel
- hudsonicus – Eastern red squirrel
- mearnsi – Red squirrel
- Tamiops
- macclellandi, maritimus, rodolphei, swinhoei – Asiatic Striped Squirrel
- Trogopterus
- xanthipes – Complex-toothed Flying Squirrel
- Xerus
- erythropus, inaurius, princeps, rulilis – African ground squirrel
