The Late Miocene karst locality at Harasib 3a, Otavi Mountains, Namibia, has yielded well over 10 000 rodent cheek teeth. Few deposits of equivalent age are known in Africa and for this reason many of the genera and species found at the site are new to science. This paper takes into account 2 329 cheek teeth assigned to non-muroid rodents (Thryonomyidae (Paraphiomys 2 new spp., Paraulacodus sp.) Pedetidae sp., Sciuridae (Heteroxerus sp.), Gliridae (new genus and species) and Bathyergidae (Proheliophobius or Richardus sp.)) and large muroids (Rhizomyidae (Nakalimys sp., new genus and species)). Comparisons of this fauna with material from East Africa (Nakali, Kenya, and Ch’orora, Ethiopia) indicate an age of ca. 10 Ma for Harasib 3a, equivalent to the Vallesian of Europe (MN 9) and Faunal Set P VI of East Africa.