Encyclopedias, Almanacs, Transcripts, and Maps
- Aurora Borealis and Aurora Australialis
- Auroville
- Aurum Solis (Order of the Sacred Word)
- Ausar Auset Society
- Austatikco-Pauligaur
- Austen Henry Layard
- Austin Seth Center (ASC)
- Australasian Carnivorous Marsupials: Dasyuromorphia
- Australasian Society for Psychical Research
- Australian and New Zealand Perspectives
- Australian Chats: Epthianuridae
- Australian Code of Practice for the Care and Use of Animals for Scientific Purposes
- Australian Creepers: Climacteridae
- Australian Fairy-Wrens: Maluridae
- Australian Ground Frogs: Limnodynastidae
- Australian Honeyeaters: Meliphagidae
- Australian Robins: Petroicidae
- Australian Satanic Council
- Australian Society for Psychical Research
- Australian Toadlets and Water Frogs: Myobatrachidae