Aus is located in the southern part of Namibia within the Aus Domain of the Palaeo- to Mesoproterozoic Namaqua-Natal Metamorphic Province. The area is characterised by voluminous granitoids which intruded supracrustal rocks of the pre-tectonic Garup group. In this study, the geochemical characteristics of the intrusive rocks were investigated, showing them to be acidic, peraluminous and derived from shoshonitic and high-K calc-alkaline magmas of anorogenic origin. Chondrite-normalised spidergrams display characteristics of rocks originated in an arc environment, while plots of K2O vs SiO2 exhibit considerable scatter indicative of crustal contamination. Three geotectonic settings are indicated, i. e. Syn-Collisional, Volcanic Arc and Within Plate, supporting collision of continental fragments. Keywords: Namaqua – Natal Metamorphic Province, geochemistry, tectonic setting, Granitoids.