Aeretes (Chinese flying squirrel) (1)
Aeromys (Sunda flying squirrels) (2)
Ammospermophilus (antelope-squirrels) (5)
Atlantoxerus (North African ground squirrels) (1)
Belomys (hairy-footed flying squirrel) (1)
Biswamoyopterus (Namdapha flying squirrel) (1)
Callosciurus (beautiful squirrels) (13)
Callospermophilus (3)
Cynomys (prairie dogs) (5)
Dremomys (Asian montane ground squirrels) (6)
Eoglaucomys (1)
Epixerus (palm squirrels) (1)
Eupetaurus (woolly flying squirrel) (1)
Exilisciurus (Asian pygmy squirrels) (3)
Funambulus (palm squirrels) (5)
Funisciurus (rope squirrels) (9)
Glaucomys (American flying squirrels) (2)
Glyphotes (sculptor squirrel) (1)
Heliosciurus (sun squirrels) (6)
Hylopetes (pygmy flying squirrels) (9)
Hyosciurus (long-nosed squirrels) (2)
Ictidomys (2)
Iomys (Javanese flying squirrel and Mentawi flying squirrel) (2)
Lariscus (Asian striped ground squirrels) (4)
Marmota (marmots) (14)
Menetes (Indochinese ground squirrel) (1)
Microsciurus (dwarf squirrels) (4)
Myosciurus (African pygmy squirrel) (1)
Nannosciurus (black-eared pygmy squirrels) (1)
Neotamias (1)
Notocitellus (2)
Otospermophilus (3)
Paraxerus (African bush squirrels) (11)
Petaurillus (pygmy flying squirrels) (3)
Petaurista (Asian giant flying squirrels) (9)
Petinomys (small flying squirrels) (8)
Poliocitellus (1)
Prosciurillus (dwarf squirrels and Sulawesi tree squirrels) (5)
Protoxerus (African giant squirrels) (2)
Pteromys (Eurasian flying squirrels) (2)
Pteromyscus (smoky flying squirrel) (1)
Ratufa (Asian giant squirrels) (4)
Rheithrosciurus (tufted ground squirrel) (1)
Rhinosciurus (shrew-faced squirrel) (1)
Rubrisciurus (Sulawesi giant squirrel) (1)
Sciurillus (pygmy squirrels) (1)
Sciurotamias (Chinese rock squirrels) (2)
Sciurus (tree squirrels) (28)
Spermophilopsis (long-clawed ground squirrel) (1)
Spermophilus (ground squirrels and rock squirrels) (14)
Sundasciurus (Sunda tree squirrels) (15)
Syntheosciurus (Central American montane squirrels) (1)
Tamias (chipmunks) (24)
Tamiasciurus (American red squirrels and chickarees) (3)
Tamiops (Asian striped squirrels) (4)
Trogopterus (complex-toothed flying squirrel) (1)
Urocitellus (12)
Xerospermophilus (4)
Xerus (African ground squirrels) (4)

(...) = Species count