Kirchner's viscacha rat or Kirchner's vizcacha rat (Tympanoctomys kirchnerorum) is a species of rodent in the family Octodontidae described in 2014.

[2][3] That species is endemic to Chubut Province in the central western Argentina, where it has a fragmented range.

Its natural habitat is desert scrubland, dunes and salt flats, where it eats halophyte plants.

It is a solitary, nocturnal rodent that constructs large mounds with complex burrows.

[2] The species was named in honor of both Cristina Fernández de Kirchner and Néstor Kirchner, presidents of Argentina.