The Cape rockjumper or rufous rockjumper (Chaetops frenatus) is a medium-sized insectivorous passerine bird endemic to the mountain Fynbos of southernmost South Africa.
This rockjumper is 23–25 cm long with a long black tail and strong legs. The male has a dark grey and black head with a thin white supercilium and a broad white moustache (malar stripe). The back and wings are dark grey, and the underparts and rump are rufous red. The female and juvenile have a paler grey head, upperparts and wings, a duller head pattern, an orange rump, and buff underparts. The call varies from 1-4 piercing whistles to a series of trills. Adults have bright red eyes, while juveniles have black eyes until mature.
The closely related Drakensberg rockjumper (Chaetops aurantius) does not overlap in range. The male of that species has orange underparts, and the female and young are paler below than the Cape rockjumper.