| Abbreviation | Definition |
|---|---|
| 5150 | Section 5150 is the section of the California Welfare and Institutions Code that states that any Cal |
| A2 | Ann Arbor, Michigan |
| AA | Ann Arbor, Michigan |
| AABBS | Amateur Action Bulletin Board System (California) |
| AAIMS | Alternate Assessment based on Alternate Achievement Standards |
| AASLD | American Association for the Study of Liver Diseases |
| AASM | Associated African States and Madagascar |
| AC | Arizona and California |
| AC | Atlantic City |
| ACR | Akron-Canton (Ohio) Region |
| ACR | Albemarle County Region |
| ACR | American College of Radiology |
| ACS | Association of Caribbean States |
| ACSUS | Association for Canadian Studies in the United States |
| ADHS | Appalachian Development Highway System |
| AEMSA | American E-liquid Manufacturing Standards Association |
| AGS | Alabama, Georgia, and South |
| AJK | Azad Jammu And Kashmir |
| AK | Alaska |
| AL | Alabama |