Adanson's House Jumper 
Adelaide trapdoor spider 
Adoxotoma nodosa 
Aelurillus v-insignitus 
Agelenopsis naevia 
Aglaoctenus lagotis 
Agroeca brunnea 
Alopecosa kochi 
Alpaida bicornuta 
Amaurobius simlis 
Amazon Ribbed Tarantula 
American House Spider 
American Nursery Web Spider 
Amyciaea lineatipes 
Anarrhotus fossulatus 
Anasaitis canosa 
Anelosimus vittatus 
Anepsion maritatum 
Antilles pinktoe tarantula 
Antmimic Spider 
Antrodiaetus pacificus 
Anyphaena aperta 
Aphantaulax signicollis 
Apritcia jovialis