The southern scrub robin (Drymodes brunneopygia) is a species of bird in the family Petroicidae.

It is endemic to Australia, where it occurs in mallee and heathland in the semi-arid southern parts of the continent, extending from Wyperfeld National Park in Victoria in the east through South Australia to the west coast between Kalbarri and the Pinnacles in Nambung National Park.

The southern scrub robin was formally described in 1841 by the English ornithologist John Gould under the current binomial name Drymodes brunneopygia.

The legs are unusually long for a passerine, and are frequently used to hop through the dense heathland that forms the bird's habitat, where it searches for insects and other small invertebrates.

Unusually for a passerine, the southern scrub robin lays only a single egg.