The Scrubtit (Acanthornis magnus) is a species of bird in the thornbill family Acanthizidae. It is monotypic within the genus Acanthornis, and is endemic to Tasmania and King Island in Australia. Its natural habitat is the temperate rainforest, Nothofagus beech forest and eucalypt woodland. It is a small species that resembles the Sericornis scrubwrens (with which is was once placed).