The Rooiberg Skolly (Thestor rooibergensis) is a butterfly of the Lycaenidae family. It is found in South Africa, where it is found in fynbos-covered mountain slopes in the Rooiberg area above Ladismith in the West Cape. The wingspan is 26–28 mm for males and 27–29 mm for females. Adults are on wing from the September to December, with a peak in October. There is one generation per year.