A. aurantiaca

A. aurantiaca may refer to:
 * Annona aurantiaca, species of plant in the family Annonaceae
 * Aurantilaria aurantiaca, species of sea snail
 * Asura aurantiaca, species of moth of the family Erebidae
 * Arsenicitalea aurantiaca, arsenic-resistant bacteria from the family of Devosiaceae
 * Arcicella aurantiaca, Gram-negative, strictly aerobic, vibrioid and non-motile bacterium
 * Asthena aurantiaca, moth in the family Geometridae
 * Aa aurantiaca, species of orchid in the genus Aa native to Peru
 * Stereum hirsutum, fungus typically forming multiple brackets on dead wood (synonym Auricularia aurantiaca)
 * Alstroemeria aurea, species of flowering plant in the family Alstroemeriaceae (synonym Alstroemeria aurantiaca)
 * Stylissa carteri, species of sponge (synonym Acanthella aurantiaca)
 * Brassia aurantiaca, species of orchid native to Colombia, Ecuador and Venezuela (synonym Ada aurantiaca)
 * Arnica rydbergii, North American species of flowering plant in the family Asteraceae (synonym Arnica aurantiaca)
 * Achyra massalis, moth of the family Crambidae (synonym Anerastia aurantiaca)