Spurilla australis Rudman, 1982 basionym Baeolidia australis, is a species of sea slug, an aeolid nudibranch found from the west coast of Australia to New Zealand.

It is a marine gastropod mollusc in the family Aeolidiidae.

[2] This species was described from Long Reef, Sydney, Australia.

It is reported from South Australia, Western Australia, Queensland and New South Wales, and also from northern New Zealand.

[3] Baeolidia australis is distinguished from Baeolidia moebii by having a thin orange sub-apical band above a broad blue band on each ceras, which is never present in Baeolidia moebii.