T. orientalis

T. orientalis may refer to:
 * Tasiocera orientalis, a crane fly species in the genus Tasiocera
 * Thenus orientalis, the Moreton Bay bug or Bay lobster, a slipper lobster species found throughout the waters of Australia's north coast
 * Thunnus orientalis, the Pacific bluefin tuna, a fish species found in the Pacific Ocean
 * Timia orientalis, a picture-winged fly species
 * Tipula orientalis, a crane fly species in the genus Tipula
 * Toussaintia orientalis, a plant species endemic to Tanzania and Kenya
 * Trachystemon orientalis, the Abraham-Isaac-Jacob, a perennial herb species native to eastern Europe
 * Tragopogon orientalis, a plant species in the genus Tragopogon
 * Trema orientalis, the pigeon wood, gunpowder tree or nalita, a flowering tree species found from South Africa to Tropical Africa and in warm regions of Asia
 * Triplophysa orientalis, a ray-finned fish species
 * Typha orientalis, the raupo, a wetland plant species in the genus Typha

Synonyms

 * Tapiostola orientalis, a synonym for Hypocoena inquinata, the sordid wainscot or tufted sedge moth, a moth species found across Canada from Newfoundland to British Columbia, south in the east to Connecticut and Ohio and in the west to Colorado
 * Thuja orientalis, a synonym for Platycladus orientalis, a conifer tree species