Thestor is a genus of butterflies in the family Lycaenidae. The species are Afrotropical.

• Thestor barbatus Henning & Henning, 1997 – bearded skolly
• Thestor basutus (Wallengren, 1857) – Basuto skolly, Basuto magpie
• Thestor brachycerus (Trimen, 1883) – Knysna skolly
• Thestor braunsi van Son, 1941 – Braun's skolly
• Thestor calviniae Riley, 1954 – Hantamsberg skolly
• Thestor camdeboo Dickson & Wykeham, 1994 – Camdeboo skolly
• Thestor claassensi Heath & Pringle, 2004 – Claassen's skolly
• Thestor compassbergae Quickelberge & McMaster, 1970 – Compassberg skolly
• Thestor dicksoni Riley, 1954 – Dickson's skolly
• Thestor dryburghi van Son, 1966 – Dryburgh's skolly
• Thestor holmesi van Son, 1951 – Holmes's skolly
• Thestor kaplani Dickson & Stephen, 1971 – Kaplan's skolly, Kaplan's thestor
• Thestor montanus van Son, 1941 – mountain skolly
• Thestor murrayi Swanepoel, 1953 – Murray's skolly
• Thestor overbergensis Heath & Pringle, 2004 – Overberg skolly
• Thestor penningtoni van Son, 1949 – Pennington's skolly
• Thestor petra Pennington, 1962 – rock skolly
• Thestor pictus van Son, 1941 – Langeberg skolly
• Thestor pringlei Dickson, 1976 – Pringle's skolly
• Thestor protumnus (Linnaeus, 1764) – Boland skolly
• Thestor rileyi Pennington, 1956 – Riley's skolly
• Thestor rooibergensis Heath, 1994 – Rooiberg skolly
• Thestor rossouwi Dickson, 1971 – Rossouw's skolly
• Thestor stepheni Swanepoel, 1968 – Stephen's skolly
• Thestor strutti van Son, 1951 – Strutt's skolly
• Thestor vansoni Pennington, 1962 – Van Son's skolly
• Thestor yildizae Koçak, 1983 – peninsula skolly

• Thestor at Markku Savela's website on Lepidoptera