T. australiensis may refer to: Tetrasphaera australiensis, a species of Gram-positive bacterium in the family Intrasporangiaceae Trichoglottis australiensis, the weeping cherub orchid, a species of clump-forming orchid Triops australiensis, the shield shrimp, a species of tadpole shrimp Trypaea australiensis, the Australian ghost shrimp, a species of ghost shrimp in the family Callianassidae