| Abbreviation | Definition |
|---|---|
| APTA | Alabama Police Trainer's Association |
| APTA | Angst, Pain, and Torture Association |
| APTF | Assam Police Task Force |
| APTP | Anti Police Terror Project |
| ARB | Accident Report Book |
| ARCC | Aeronautical Rescue Co-ordination Centre |
| ARGUS | Air Reconnaissance Ground Unit Support |
| ART | Aggression Replacement Training program |
| ARV | Armed Response Vehicle |
| ASAP | Anarchists, Skins, And Punks |
| ASBO | Anti-Social Behavior Order |
| ASD | Approved Screening Device |
| ASFM | African Society of Forensic Medicine |
| ASI | Assistant Sub-Inspecter |
| ASIRT | Alberta Serious Incident Response Team |
| ASL | Age, Sex, Location |
| ASNT | Area Searched No Trace |
| ASP | Arkansas State Police |
| ASP | Arkansas State Police |
| ASP | Armament Systems and Procedures |