Stephen's Skolly (Thestor stepheni) is a species of butterfly in the Lycaenidae family. It is endemic to South Africa, where it is found in the Riviersonderend Mountains above the Boesmanskloof Pass and Greyton in the West Cape. It is also found on the Klipberg. The wingspan is 27–36 mm for males and 31–40 mm for females. Adults are on wing from December to January, with a peak in December. There is one generation per year.