In southern Africa, Common Duiker occur extensively through Namibia, Botswana (although they are uncommon in the region of the Okavango Delta), Zimbabwe and Mozambique (south of the Zambezi River). Within the assessment region, it is widespread through all provinces and through all biomes in South Africa, is widespread in Swaziland, but is considered rare in Lesotho (Lynch 1994), which may be a result of its lack of sufficient vegetation cover and browse resources (Skinner & Chimimba 2005).