D. australis may refer to: Delma australis, a lizard species in the genus Delma Diospyros australis, a shrub or small tree species found in Australia Dryococelus australis, the Lord Howe Island stick insect, an insect species found on the Lord Howe Island Group Duplicaria australis, a sea snail species Dusicyon australis, the Falkland Islands wolf or warrah, an extinct land mammal species found only on the Falkland Islands
See also Australis (disambiguation)