E. orientalis

E. orientalis may refer to:
 * Eleutherodactylus orientalis, a frog species endemic to Cuba
 * Erioptera orientalis, a crane fly species in the genus Erioptera
 * Ervatamia orientalis, a plant species in the genus Ervatamia found in Australia
 * Erythrina orientalis, a plant species
 * Eudynamys orientalis, the Pacific koel or Eastern koel, a cuckoo species found from Wallacea east to the Solomon Island and south to northern and eastern Australia
 * Eurystomus orientalis, the Oriental dollarbird or dollar roller, a bird species

Synonyms

 * Erigone orientalis, a synonym for Hylyphantes graminicola, a small spider species with palaearctic distribution