Rudd's mouse or the white-bellied brush-furred rat (Uranomys ruddi) is the only species in the genus Uranomys.

Head and body sizes range from 8.4-13.4 cm long.

Weight is 41-53 g. The hairs on the back of this species are stiff like the brush-furred mice, but not spiny as in Acomys.

The animal is known across a wide range in Africa, but is never common.

Rudd's mouse is thought to be nocturnal.