Australis (Latin for southern or of the south) may refer to:
- Alula Australis, a star system in the constellation Ursa Major
- Talitha Australis, a binary star in the constellation Ursa Major
- Tania Australis, a star in the constellation Ursa Major
- Terra Australis
- The Aurora Australis, also known as the Southern Lights
In music:
- Australis (musical project), the new age music project created in 2004 by Oscar Aguayo
In media:
- Australis Media, a former group participating in the Galaxy television channel
In video games:
- a type of enemy in the video game Dino Crisis 3
In transportation:
- SS America (1940), a passenger ship that sailed under the name Australis from 1964 to 1978
- Australis Motors, an Australian automobile manufactured from 1897 to 1907
In biology:
- Australis (elm hybrid), a type of tree
- Latin binomial abbreviations for species
- A. australis (disambiguation)
- B. australis (disambiguation)
- C. australis (disambiguation)
- D. australis (disambiguation)
- E. australis (disambiguation)
- F. australis (disambiguation)
- G. australis (disambiguation)
- H. australis (disambiguation)
- I. australis (disambiguation)
- J. australis (disambiguation)
- K. australis (disambiguation)
- L. australis (disambiguation)
- M. australis (disambiguation)
- N. australis
- O. australis (disambiguation)
- P. australis (disambiguation)
- R. australis (disambiguation)
- S. australis (disambiguation)
- T. australis (disambiguation)
- U. australis (disambiguation)
- V. australis
- W. australis
- X. australis (disambiguation)
- Z. australis
- Commelina virginica L. var. australis, a synonym for Commelina erecta