'''Viscacha rats''' are a group of rodents in the family Octodontidae. All species are found in Argentina. They are placed in the following genera:
*Genus '''''Octomys''''' ** ''O. mimax '', mountain viscacha rat, found in the Andes *Genus '''''Pipanacoctomys''''' ** ''P. aureus'', the golden viscacha rat, found near a salt flat *Genus '''''Tympanoctomys''''' (4 species, 3 extant), found in desert shrubland near salt flats ** ''T. barrerae'', the plains viscacha rat ** ''T. kirchnerorum'', Kirchner's viscacha rat, ** ''T. loschalchalerosorum'', the Chalchalero viscacha rat ** †''T. cordubensis''
{{disambiguation}} Category:Rodents Category:Animal common name disambiguation pages