| Abbreviation | Definition |
|---|---|
| AFSSA | French Food Standards Agency (translation) |
| AFT | African Fat Tailed |
| AG | Association for Gnotobiotics |
| AGAC | Advanced Genetic Analysis Center (University of Minnesota) |
| AGNIC | Agriculture Network Information Center |
| AGVA | Australian Greyhound Veterinary Association |
| AGVR | Advisory Group on Veterinary Residues (of MAFF: now obsolete, replaced by VRC) |
| AHDA | Animal Health Distributors Association |
| AHEAD | Animal Health/ Emerging Animal Diseases |
| AHI | Animal Health Institute |
| AHIS | Animal Health Information Specialists UK |
| AHRA | Azteca Horse Registry of America |
| AHS | American Heartworm Society |
| AHS | Arab Horse Society |
| AHT | Animal Health Trust |
| AHVG | Animal Health and Veterinary Group (of DEFRA) |
| AI | Anthrozoology Institute (University of Southampton) |
| AIETA | Artificial Insemination Equine Trade Association |
| AIF | Animal Industry Foundation |
| AIFRB | American Institute of Fisheries Research Biologists |