Ant-eating chat 
Ant-Mimicking Treehopper 
Ant-nest ladybird 
Antaeotricha osseella 
Antakarana Leaf Chameleon 
Antarctic beech 
Antaxius spinibrachius 
Anteater chat 
Antelope horns 
Antelope jackrabbit 
Antemna rapax 
Antennae-carrying restrepia 
Antennaria dioica 
Antennaria howellii 
Antennaria media 
Antennaria plantaginifolia 
Anteros carausius 
Anteros formosus 
Antestiopsis cruciata 
Anthanassa crithona 
Anthaxia bicolor 
Anthaxia dimidiata 
Anthaxia expansa 
Anthaxia godeti