A. major
# A. major

A. major may refer to:

* Ademosyne major, an extinct beetle species in the genus Ademosyne, the family Ademosynidae and the suborder Archostemata
* Allactaga major, the great jerboa, a rodent species found in Kazakhstan, Russia, Turkmenistan and Uzbekistan
* Ammosaurus major, an extinct herbivorous dinosaur from the Early Jurassic of New England, probably synonymous with Anchisaurus polyzelus
* Amphicyon major, an extinct carnivorous mammal species from the middle Miocene found across Europe and in western Turkey
* Aphrastochthonius major, a pseudoscorpion species in the genus Aphrastochthonius and the family Chthoniidae
* Arachis major, a flowering plant species in the genus Arachis native to South America
