The Black Mfolozi River, known in Zulu as Imfolozi emnyama, is a significant and ecologically vital waterway in KwaZulu-Natal, South Africa. It is one of the two primary tributaries that converge to form the larger Umfolozi River, which itself is a crucial habitat for a diverse range of species. The river's catchment area spans approximately 1,925 square kilometers, with portions of its headwaters and associated wetlands falling within protected areas, contributing to its status as one of the country's flagship rivers.