| Abbreviation | Definition |
|---|---|
| APSK | Animal Production Society of Kenya |
| AQCS | Animal Quarantine and Certification Services |
| AR | Animal Rights |
| ARAMS | Animal Reporting and Movement Service |
| ARAN | Animal Rescue Action Network |
| ARAN | Animal Rights Action Network |
| ARCC | Animal Research Community Channel |
| ARCF | Animal Research and Care Facility |
| AREB | Animal Research Ethics Board |
| ARECA | Animal Referral and Emergency Center of Arizona |
| ARECA | Animal Referral Emergency Center of Arizona |
| ARF | A R F Animal Rescue Foundation |
| ARF | Animal Rescue Friends |
| ARF | Animal Rescue of Fresno |
| ARF | Animal Research Facility |
| ARF | Animal Resource Foundation |
| ARF | Animals Requesting Friends |
| ARFA | Animal Rights Frequently Asked |
| ARIAH | Animals Rights In Armenian Highlands |
| ARK | Animal Refuge Kansai |