P. gigantea may refer to: Pachyaena gigantea, an extinct mammal species in the genus Pachyaena Panthea gigantea, a moth species found in western North America Petalura gigantea, the giant dragonfly or south-eastern petaltail, one of the world's largest dragonflies Phalaenopsis gigantea, an orchid species endemic to Borneo Pinguicula gigantea, a tropical carnivorous plant species native to Mexico Pleuroploca gigantea (= Triplofusus papillosus), the Florida horse conch, a species of extremely large predatory subtropical and tropical sea snail Pouteria gigantea, a plant species endemic to Ecuador Pseudaneitea gigantea, an air-breathing land slug species Pseudibis gigantea, the giant ibis, a bird species Pseudoeurycea gigantea, a salamander species endemic to Mexico
See also Gigantea (disambiguation)