Alkanna primuliflora 
Alkanna stribrnyi 
Alkanna strigosa 
Allacma fusca 
Allamanda angustifolia 
Allancastria lourisitana 
Allanctus luctifer 
Allardiana gymnopleura 
Allata benderi 
Allecula morio 
Allegheny blackberry 
Allegheny Monkeyflower 
Allen's Coral Snake 
Allen's gallinule 
Allen's Shrimpgoby 
Allen's tubelip 
Allens hummingbird 
Allied cowrie shell 
Alligator gar 
Alligator pipefish 
Alligator snapping turtle 
Alligator weed flea beetle 
Allionia incarnata 
Allium aflatunense