Austroliotia australis, commonly known as the southern liotia, is a species of sea snail, a marine gastropod mollusk in the family Liotiidae.
The shell reaches a height of 18 mm. It is white to light brown and features a pronounced umbilicus. The rounded whorls are marked by spiral riblets and longitudinal striae. A beaded riblet extends into the umbilicus. The peristome is varicose, with the inner margin extending below and above.
This marine species occurs in the subtidal zone off Australia (New South Wales, Victoria, South Australia, Western Australia) and Tasmania.