| Abbreviation | Definition |
|---|---|
| ASP | Assistant Superintendant of Police |
| ASPD | Altamonte Springs Police Department |
| ASPS | Association of Scottish Police Superintendents |
| ASRO | Addressing Substance-Related Offending program |
| AST | Arizona State Trooper |
| ASU | Administrative Support Unit |
| ASU | Air Support Unit |
| ASUP | Arkansas State University Police |
| AT | Anti-Terrorism |
| ATF | Anti Terrorism Force |
| ATF | Ass To the Floor |
| ATL | Attempt To Locate |
| ATM | Area Training Manager |
| ATO | Area Training Officer |
| ATPA | Automobile Theft Prevention Authority |
| ATT | Attempted |
| ATTF | Auto Theft Task Force |
| ATTPU | Attempted Pick-Up |
| AUP | Afghan Uniform Police |
| AUP | Afghan Uniformed Police |