C. australis may refer to: Ceuthmochares aereus, the Yellowbill, a bird species found in Africa Chaetorellia australis, the yellow starthistle peacock fly, a fly species native to southern Europe and the Mediterranean Charadrius australis, the Inland Dotterel or Australian Dotterel, a medium-sized plover species found in Australia Cirrhigaleus australis, the Southern Mandarin dogfish, a shark species Citrus australis, the round lime or Australian lime, a large shrub or small tree found in Australia Cordyline australis, the cabbage tree, a monocotyledon plant species endemic to New Zealand Ctenomys australis, the Southern tuco-tuco, a rodent species endemic to Argentina. Cyathea australis, the rough tree fern, a tree fern species native to Australia Cyclaspis australis, a crustacean species in the genus Cyclaspis Cyclorana australis, the giant frog, a burrowing frog found in Australia
See also Australis (disambiguation)