The Kreb's fat mouse (Steatomys krebsii), is a species of nesomyid in the Nesomyidae family. It is found in Angola, Botswana, Lesotho, Namibia, South Africa, and Zambia. Its natural habitats are Mediterranean-type shrubby vegetation and subtropical or tropical high-altitude grassland. Its name honours Georg Ludwig Engelhard Krebs (1792–1844), a German natural history collector in South Africa.