Suaeda australis, the austral seablite, is a species of plant in the family Amaranthaceae, native to Australia.

It grows to 10 to 90 cm (4 to 35 in) in height, with a spreading habit and branching occurring from the base.

The leaves are up to 40 mm in length and are succulent, linear and flattened.

[4] The species occurs on shorelines in coastal or estuarine areas or in salt marshes.

[2] In irrigated areas, the species is known as a salinity indicator plant and is referred to as redweed.