Heterochelus unicolor is a species of beetle of the family Scarabaeidae. It is found in South Africa (Western Cape).
Adults reach a length of about . They are black, with dark brown legs. The pronotum, scutellum, elytra, pygidium, propygidium and abdomen are densely covered with sulfur-yellow, almost round scales. The pronotum also has a few erect yellow hairs on the sides.