| Abbreviation | Definition |
|---|---|
| ACEF | Animal Cruelty Exposure Fund |
| ACF | Animal Component Free |
| ACFC | Animal Care and Facilities Committee |
| ACFP | Animal Component Free Process |
| ACGAS | All Creatures Great and Small (movie and James Herriot book) |
| ACNL | Animal Crossing New Leaf |
| ACPS | Animal Care and Protective Services |
| ACPU | Animal Cruelty Prosecution Unit |
| ACQ | Animal Center of Queens |
| ACQA | Animal Care and Quality Assurance |
| ACRB | Animal Care Review Board |
| ACRF | Animal Companion Rescue Foundation |
| ACS | Animal Care Services |
| ACU | Animal Care and Use |
| ACUP | Animal Care and Use Proposal |
| ACWB | Animal Care Well Being |
| ACWF | Animal Conservation and Welfare Foundation |
| ACWL | Animal Crossing Welcome Luxury |
| ACWP | Animal Control and Welfare Project |
| ACWW | Animal Crossing Wild World |