The Namibia Palaeontology Expedition has collected new samples of Suiformes from the lower Miocene strata of southern Namibia that clarify the relationships of the genera Diamantohyus and Nguruwe. The new Diamantohyus sample reveals that Sanitheriidae is closer to Anthracotheriidae than to Suidae, whereas the Namibian suids hitherto classed as Kenyasus are more likely to belong to Nguruwe. Keywords: Suiformes, Miocene, Namibia, Systematics, Morphology.