H. orientalis

H. orientalis may refer to:
 * Helleborus orientalis, a flowering plant species
 * Heleophryne orientalis, the Eastern ghost frog, a frog species endemic to South Africa
 * Huaxiagnathus orientalis, a theropod dinosaur species from the Lower Cretaceous of China
 * Hyacinthus orientalis, the common hyacinth, garden hyacinth or Dutch hyacinth, a perennial flowering plant species native to southwestern Asia, in southern and central Turkey, northwestern Syria, Lebanon and northern Israel
 * An orthographic variant of Halorubrum orientale, a halophilic archaeon.