A new genus Namibianira, represented by four new species, N. aigamasensis, N. dracohalitus, N. arnhemensis, and N. aikabensis is diagnosed. The new genus is intermediate between Protojanira and Protojaniroides and is characterized by the possession of ambulatory first pereopods, and a reduced molar process of the mandible. The new species are the first record of cavernicolous freshwater isopods from Namibia.