Borbo fallax, the false swift, is a butterfly of the Hesperiidae family. It is found in tropical Africa. In South Africa it is found in Swaziland, coastal KwaZulu-Natal, northern Gauteng and the Limpopo Province and the extreme north-east of the North West Province. The habitat consists of coastal bush and moist savanna. The wingspan is 36–43 mm for males and 41–44 mm for females. Adults are on wing year round, but are scarcer in winter in southern Africa. The larvae feed on various Poaceae species, including Ehrharta erecta and Saccharum species.