Arabian leopard 
Arabian oryx 
Arabian partridge 
Arabian pea 
Arabian Picassofish 
Arabian red fox 
Arabian sand gazelle 
Arabian Star-Flower 
Arabian tahr 
Arabian toad 
Arabian warbler 
Arabian wheatear 
Arabis aucheri 
Arabis verna 
Arachnis flos-aeris 
Arachnocampa richardsae 
Arachnospila trivialis 
Arachnothelphusa merarapensis 
Arachnothryx leucophylla 
Aradus betulae 
Aradus funestus 
Araeopteron rufescens 
Arafura shrikethrush 
Aragua bistonaria